total abstract 中文意思是什麼
total abstract
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Abstract : apply computer simulation to the distribution pattern of air - flow without considering the cold condition of the combustion and compare the flow patterns under different designed circumstances. and the effect of the design of the partition in the air way of the burner on the flow and mixture of gas and air is especially studied. the result shows that the design of partition plays a very important role in strengthening the mixture of gas and air, but increases the loss of the resistance in the air way and the total pressure of the air way in same working conditions needs increasing
文摘:應用計算機模擬的方法，在不考慮燃燒的冷態情況下，研究了熱風爐燃燒室內的氣流分佈規律.在此基礎上，比較了2種不同設計方案的氣流流動特徵，尤其是研究了燃燒器空氣通道內阻流板的設置與否對空氣和煤氣的流動和混合的影響.結果表明，阻流板的設計對加強空氣和煤氣的混合有著極為重要的作用，同時也增加了空氣管道的阻力損失，在同樣的工況條件下需要提高管道系統的總壓力 -
Abstract : the total quantity of perylene quinonoids in hypocrella bambusae ( b. et br. ) sacc., shiraia bambusicola p. henn and culture substance of ascomycetes hypocreacae ( fr ) tul. sp. were determined with spectrophotometric methods. the relative extraction efficiency were studied when ethanol, acetone and chloroform were used as solvents. among them acetone was the best one
文摘:用分光光度法測定了竹紅菌、竹黃和菌寄生菌培養物中?醌類化合物的總量；同時研究了以無水乙醇、丙酮和氯仿為溶劑提取?醌類化合物的相對效率，結果發現以丙酮為溶劑最合適。 -
Abstract : the almost ideal demand sy stem （ aids ） is used to condition of analy ze systematically the food consumption u rban inhabitants of henan province and a n aids model is set up as a basis to ana lyse the elasticities of demand expendit ure and price （ own price elasticity and cross - price elasticity ） the results show that among the five major groups of foo d consumption ， grain and poultry and egg are major consumer goods ， 55 of total ex penditure in urban housholds tobacco ， lig ur and tea ' s shares are decreasing ， as in come increasing all foods have leap out of the shortage ， and the substituting rel ationship among the foods is expanding
文摘:利用幾乎理想系統（ aids ）對河南城鎮居民的食品消費狀況進行了系統分析，建立了幾乎理想需求系統模型，並在此基礎上進行了需求支出彈性和需求價格彈性（自價格彈性和交叉價格彈性）分析，結果表明，在5大類食品消費中，糧食和肉禽蛋是城鎮居民的主要消費品，約占食品消費的55 % ，煙酒茶消費份額隨著人們收入提高呈下降趨勢.各種食品跳出「短缺」困境，食品間的替代關系增加 -
Abstract : the magnetic moment of a hydrogen atom is calculated by using the solution of the relativistic wave equations. it is shown that the so called total magnetic moment are produced from the electron orbit motion. these results show that the total angular momentum j is actually the relativistic orbital angular momentum
文摘:利用氫原子的相對論性波動方程解計算了氫原子的磁矩.結果表明，現行量子理論中所謂的總磁矩實際上都是由電子的軌道運動產生的，由此提出了所謂的總角動量實際上是相對論性軌道角動量的看法 -
Abstract : this paper, by analyzing the effect of differences of mineral structure of 2 1 layer minerals, the properties of their interlayer charge and changes of some properties caused by weathering on the attractive force for interlayer cation, reached the conclusion that : the fixation capacity is determined by the ratio of the total amount of interlayer charge and that of tetrahedral charges. the relationship of interlayer cation fixation and octahedral structure of secondary minerals is probably different from that of primary minerals. the oxidation and reduction of variable valence cations can greatly influence the cation fixation capacity
文摘:分析2 1型礦物的結構差異、層間電荷性質以及在風化過程中某些性質的變化對層間陽離子吸引力的影響，對已有報道中一些矛盾的結果或不具普遍意義的結論進行了討論.得出幾個較為明確的結論：層間總電荷與四面體電荷所佔比例大小共同決定礦物對層間陽離子的固定能力；原生礦物中八面體結構與層間陽離子固定間的關系對次生礦物而言，也許並不一致；八面體中可變價陽離子的氧化還原，可導致礦物固定陽離子能力發生較大變化 -
Abstract : physical activity has been defined as " any bodily movement produced by skeletal muscles that results in energy expenditure ". it is strongly endorsed as a means of staying healthy and an important avenue for social contact. although in australia, some studies have been conducted into the levels of physical activity in some ethnic communities, there has been a tendency to adopt a homogeneous view of culturally and linguistically diverse ( cald ) people rather than an ethno - specific perspective that recognises differing cultural beliefs and practices between and across language groups. this paper reports on a study that aimed to explore the concepts of, and attitudes towards, physical activity among older hong kong chinese australians resident in nsw. this study involved individual in - depth interviews and the use of open - ended questions. a total of 22 informants was recruited for the study. the findings revealed that most informants did not have a clear idea about what was meant by the term physical activity. " physical activity " tended to be a confusing and complicated term to this group. in addition, attitudes towards physical activity among this group reflect their cultural and health beliefs in preventive health care. to increase the physical activity level among older hong kong chinese australians, culturally - specific health promotion strategies might be needed to tackle the misconception about and specific attitudes towards physical activity, as well as to match the holistic chinese oncept of health maintenance
文摘:身體活動指"由骨骼肌產生的體能消耗運動" ，是保持身體健康、增進社會交往的重要方式和途徑.在澳大利亞，雖然有研究調查民族群體身體活動的各個層面，但總體而言，多數研究更側重於民族群體的同質性，而忽視了其異質性.本研究探討在新南威爾士州居住的澳籍香港老年華人對身體活動的概念理解及對身體活動的態度.研究使用開放性問卷進行個體深度訪談，受訪者22人.研究發現，大多數受訪者不清楚"身體活動"這一術語的含義，對他們來說， "身體活動"是一個模糊的、復雜的術語.該群體對身體活動的態度反映了他們在預防性衛生保健方面的文化和健康觀念.顯然，提升澳籍香港老年華人的身體活動水平，需要一種基於文化特殊性的健康促進策略以解決對身體活動的誤解，同時也需要具體的身體活動態度與華人整體性保健觀念相匹配 -
Abstract : according to the base flow separation results from hydrographs in many watershed, the best regression equation expressing the relationship between annual precipitation infiltration coefficient and the weight of different strata area to total area of the watershed is established. the equation can be used to calculate the precipitation infiltration recharge for different ground water basins in which the strata distribution and the precipitation are given. the precipitation recharge is equivalent to the ground water recharge in some mountainous area where the exploitation of ground water resources are far from being sufficient
文摘:降水入滲補給系數與地層相關分析的目的，是為推求山丘區降水入滲補給量.魯中山丘區是由各種不同地層出露組成的山丘區域.在多個水文流域基流分割基礎上，建立流域年均降水入滲補給系數與各種地層出露面積占流域總面積權重間的最佳回歸方程，利用該回歸方程和地層分佈及降水量推算不同地下水流域的降水入滲補給量.在地下水開發利用不高的山丘區，降水入滲補給量即為地下水補給量 -
Abstract : this paper introduces a kind of special technology to treat low grade molybdate and sodium molybdate which makes frist ammonium leaching of molybdenum up to above 96 %, and frist bases leaching of molybdenum up to above 97 %, with the 0. 5 % 1. 0 % of total molybdenum amount washed away and the less than 4 % of molybdenum amount thrown away. consequently, the solution and product has gained arise of high purity
文摘:介紹了處理低品位鉬精砂生產鉬酸銨及鉬酸鈉的工藝，鉬的一次氨浸率達96 %以上，一次堿浸率達97 %以上，隨同廢液流失的鉬占總投入鉬量的0 . 5 % 1 . 0 % ，棄渣含鉬小於4 % ，所得溶液及產品純度高。 -
Abstract : the synthesis and refinement of 2, 3 - dichlorobenzaldenyde aredescribed in this thesis. by the new refinement the total receipt rate is raised from 32. 6 % to 45 %
文摘:介紹了2 ， 3 -二氯苯甲醛的合成及提純方法，採用新的提純方法，可使總收率由文獻值32 6提高到45 。 -
Abstract : based on the concept of space migration length of photo - activation species, the analytical expression of the total number n of photo - activation species that can reach a segment on the substrate in the cubic deposition reaction space is derived. the simulation of the relationship of deposition rate and position of substrate is also completed. the simulation result agrees with the experiment data well
文摘:基於光激活物質空間遷移長度的概念，推導出方形反應空間中到達基片上單位面積的光激活物質總數的解析表達式，對光化學汽相沉積中淀積速率和基片位置的關系進行了模擬和分析.模擬結果同實驗結果符合良好 -
Abstract : making use of the systematic experiments on a newelectrostatically enhanced cyclone, the characteristics of this tested cyclone have been explored, and the electrostatically enhanced rule of the cyclone has been discovered by means of the analysis on the total efficiency and grade efficiency
文摘:對一種新型電強化旋風除塵器模型進行了系統的實驗研究，通過對這種旋風器加電前後各性能的實驗測定和作用機理研究，總結出該型電旋風器的特點，並對電強化前後的總效率和分級效率作了分析，揭示出該型旋風器電強化方式的規律。 -
Abstract : focusing on such aspects as natural drugs, natural pesticides, growth and ecologic regulators, natural dependence drugs and total synthesis of natural organic compounds, this paper reviews some compounds with greater social significance or academic value, and aims to see in perspective the developmental process of the natural organic compounds with bioactivity, a constant hot research field, and its significance in human life
文摘:本文從天然藥物、天然農藥、生長及生態調節物質、精神依賴藥物和全合成等幾個方面，通過評論一些有較大社會意義或學術價值的化合物，試圖透視具有生理活性天然有機化合物這一常盛不衰的熱點研究領域的發展脈絡，及對人類生活的意義。 -
Abstract : a large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning
文摘:應用由111個傳聲器組成的平面傳聲器陣列對當前流行的民用客機進場著陸過程中的機體噪聲源進行了實驗測量，本文對七架窄體客機和七架寬體客機的起落架噪聲進行了分析，得到了起落架噪聲的頻譜特性、指向特性和聲級變化.研究發現，起落架噪聲的頻譜是由寬頻隨機噪聲與一些較為明顯的單音噪聲源組成，起落架噪聲的指向性類似於一個水平放置的偶極子.不同飛機起落架噪聲的聲級相差較大，這說明可以通過重新結構設計降低起落架噪聲。 -
Abstract : in order to implement the goal of 2000 on total control and meet the requirement of discharging standard, daqing oilfield formulates the plan for industrial pollution sources to meet the standard and the plan for total control on discharging pollutants. a scheme on reducing the total amount of pollutants discharged by corporations is suggested. concrete measures are also suggested to treat chemical wastewater from chemical agent center factory and acrylic fibres engineering, as well as cyanide wastewater increased recently in the tertiary oil recovery engineering
文摘:為實現2000年污染源達標排放和污染物總量控制目標，大慶油田制定了「工業污染源達標計劃」 、 「污染物排放總量控制計劃」 ；提出了2000年超標企業排污總量削減方案；對化工助劑總廠和腈綸工程的化工污水、三次採油工程新增化工含氰污水的治理提出了具體措施。 -
Abstract : aimed at surveying method of three - dimensional traverse, this paper makes research on accuracy matching of three - dimensional traverse by electronic total station, and comes to the conclusion that rating - planimetric - traverse matches well with corresponding rating - vertical - traverse
文摘:利用全站儀可以將平面控制測量和高程式控制制測量融為一體三維控制測量.針對全站儀三維導線的作業方法，討論了它的精度匹配問題，得出等級平面導線與對應的等級高程導線相匹配的結論 -
Abstract : optimum distances between primary nozzle exit and mixing tube inlet, static pressure recovery of the mixing flow in mixing tube 、 total pressure distributions at the exit of mixing tube 、 pumping coefficients and total pressure losses of the exhaust ejector systems with four different types of primary nozzles have been measured in the experiments
文摘:對4種主噴管組成的排氣引射系統的引射系數和總壓損失、各主噴管出口與混合管進口之間的最佳間距、混合氣流在混合管內的靜壓恢復及混合氣流在混合管出口處的總壓分佈等進行了測量和對比。 -
Abstract : an algorithm of minimizing the number of buffers under certain delay constraint with accurate delay models is presented. given a two - terminal net, the algorithm can minimize the total number of buffers inserted to meet the delay constraint. a high order delay model is applied to estimate interconnect delay and a nonlinear delay model based on look - up table is for buffer delay estimation. the experimental results show that the algorithm can efficiently achieve the trade - offs between number of buffers and delay, and avoid needless power and area cost. the running time is satisfactory
文摘:提出了在精確時延模型下，滿足時延約束的緩沖器數目最小化的演算法.給出一個兩端線網，該演算法可以求出滿足時延約束的最小緩沖器數目.運用高階時延模型計算互連線的時延，運用基於查找表的非線性時延模型計算緩沖器的時延.實驗結果證明此演算法有效地優化了緩沖器插入數目和線網的時延，在二者之間取得了較好的折中.演算法的運行時間也是令人滿意的 -
Abstract : according to the characteristics of road surveying, the author introduces the method of coordinate adjustment of the total station coordinate traverse on the principle of coordinate transformation
文摘:根據線路測量的特點，對全站儀坐標導線計算進行研究，提出了一種利用坐標轉換原理直接對全站儀所測得的坐標進行平差計算的方法。 -
Abstract ： objective : to evaluate the association between total cholesterol, low - density lipoprotein cholesterol ( ldl - c ), high - density lipoprotein cholesterol ( hdl - c ), total cholesterol to hdl - c ratio, and non - hdl - c with the risk of ischemic stroke in a large cohort of apparently healthy women
摘要：目的：評價貌似健康的女性群體的總膽固醇、低密度脂蛋白、高密度脂蛋白、總膽固醇/高密度脂蛋白及非高密度脂蛋白水平與缺血性卒中風險的關系。 -
Achromatic optical phase retarders can be divided into two main types according to design mechanics, birefringence and total abstract internal reflection. the simple flat - plate birefringent ones have been proved to be ideal by experience
消色差相位延遲器，根據設計的機理不同可以分成兩大類：一是全內反射型消色差相位延遲器，二是雙折射型消色差相位延遲器。
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