after-precipitation 中文意思是什麼

after-precipitation 解釋
后沉澱作用
  • after : adv 在後；繼后；后來。 follow after 跟著。 look before and after 瞻前顧后，前思後想。 soon after ...
  • precipitation : n. 1. 猛然摔下，落下。2. 猛沖；急躁，輕率，魯莽。3. 【化學】沉澱（作用）；降雨（量）；（雨、雪等的）降落。
  1. The cell extract aliquots were added by ammonium sulfate with 30 %, 40 %, 50 %, 60 %, 70 %, 80 % and 90 % saturation, separately. the activities of sod for the re - suspensions were detected after dialysis and centrifugation. it was found sod activity could be detected after the precipitation by ammonium sulfates with 30 % saturation or above, and the highest sod activity could be obtained by precipitation of ammonium sulfate with 80 % saturation

    Maltophilia276菌株細胞提取物中分別加入飽和度為30 、 40 、 50 、 60 、 70 ， 、 80和90的硫酸銨，經過透析、離心、重新懸浮后檢測sod的活性發現：當硫酸銨的飽和度為30時，其活性可檢測出sod活性，當硫酸銨的飽和度為80時，檢測出的sod活性最大。
  2. Proceed from the present situation of nanometer tio2 powder industry in our country, confront more problems in preparation of nanometer tio2. on the base of analyzing advantages and disadvantages of existing every methods, neutralization precipitation method is adopted, using self - prepare tioso4 solution as raw material, soda as precipitant to precipitate titanous hydroxide precipitation, then obtained anatase nanometer titanium dioxide after heat treatment

    從我國發展納米tio _ 2粉體產業的現狀出發，針對納米tio _ 2制備中現存的問題，我們在綜合分析對比了現有各種方法優缺點的基礎上，採用中和沉澱法，以自制的tioso _ 4為原料，碳酸鈉作沉澱劑沉澱出ti （ oh ） _ 4沉澱，經熱處理得到銳鈦型納米tio _ 2粉體。
  3. For 2h, the osc and special surface area decreased sharply, meaning a bad thermal stability. the osc and special surface area of the samples prepared by precipitation keep very well after aged, exhibiting a promising thermal resistance. while the samples prepared by dipping method have a much more stable osc at different temperature, that is, they have a good thermal stability

    研究表明，採用溶膠?凝膠法制備的樣品在老化前具有最大的儲氧量和比表面積，但經高溫老化后，其儲氧量急劇下降，表現出很差的抗高溫老化性能；採用沉澱法制備的樣品在老化前後，其儲氧量和比表面積降幅最小，有良好的高溫熱穩定性能；採用浸漬法制備的樣品不管老化與否，其儲氧量並不隨著儲氧溫度的改變而大起大落，表現出較好的熱穩定性。
  4. In light of current using situation and drawing on the experience of many scholars researched methods and viewpoints, this thesis made com land, fallow land, orchard, grass land as experimental field in black soil region jlau, which carried out experiment by applying different amounts of n and p fertilization in corn field. by means of collecting the samples of rainfall runoff, erosion silt and surface layer soil before and after rainfall for one year nature precipitation in field, we study the effect of surface runoff on n and p nutrient and fertility degeneration. the results showed : ( l ) there are lots of factors which affect soil erosion and losses of n and p, in which rainfall and rainfall intensity were more important, while rainfall intensity is the most important meteorological phenomena factor

    針對當前黑土利用現狀，本文借鑒眾多學者的研究方法和觀點，在吉林農大黑土區選擇利用方式不同的玉米地、休閑地、果園、草地，在玉米區進行了不同數量的施肥，通過野外試驗，採集一年自然降雨產流及泥沙樣品，同時採集降雨前後的耕層土壤樣品，研究了黑土區地表徑流對氮磷養分特徵及肥力退化的影響，結果表明：土壤侵蝕和氮磷的流失受諸多因素的影響，降雨量、降雨強度是重要因子，而降雨強度是影響農田地表徑流養分流失的最重要的氣象因子，特別是暴雨，暴雨徑流中氮磷濃度較平時高得多；隨作物生長，覆蓋度逐漸增加以及不同利用方式下表現的覆蓋度差異，氮磷流失都表現為顯著的差異。
  5. The precipitation frequencies is analysed according to 1956 ~ 2000 years of rainfall record series in baoding area. the features of distribution of rainfall are detailed evaluated. firstly, the distribution of monthly precipitation is not even. for instance. the annual rainfall amount is about 548mm in whole year, about 80 % of them in summer season. secondly, yearly variation of rainfall is greater. thirdly, the abundant years usually are followed by short years, but the important changes have taken place in the last decades. before 70 ' s the abundant years took the dominant position, from the 70 ' s to the middle of 80 ' s the short years took place more frequently than ever. after the later of 80 ' s, the short years hold the main position. the above knowledge is instructive for guiding the rainwater resources effective utilization

    本文利用1956 2000年保定市的長系列降雨資料，對保定市降水量進行了頻率分析、年內變化分析和多年變化分析，明確了保定市降水量年內、年際間的變化情況：保定市降水量年內分配不均，汛期（ 6 - 9月）占年降水量的81 。保定市降水量年際間變化大，豐水年和枯水年交替發生， 70年代以前以豐水年段為主； 70年代到80年代前期降水量豐枯交替頻繁，總的接近於枯水年段； 80年代後期至今以枯水年段為主。這種降水分佈規律對農業生產雨水資源的高效利用具有重要的指導意義。
  6. Data used in this work are north pacific ssta, 160 stations precipitation of china, and ncep reanalysis data. main results are as follow : ( 1 ) it is found that a apparent transition of north pacific ssta in later 1970 ' s : eastern and middle - equatorial pacific ssta turns from cold to warm with area extending, and mid - latitude pacific ( west wind drift zone ) turns from warm to cold. during this transition of ssta, different characters also appear in el nino and la nina : before 1976, la nina happens more frequently, and its duration is longer, el nino zone develops from negative ssta in the early stage ; after 1976, el nino happens a little bit frequent and longer with more intensity than before, el nino zone develops from positive ssta in the early stage ; the course of ssta variation has an enso cycle of 2 - 6 years, annual oscillation of 8 - 9 years, and decadal variation of about 22 years

    本文採用1950 - 1999年北太平洋海表溫度（ sst ） 、中國160站夏季降水和ncep再分析的歐亞500hpa高度場等資料，利用eof 、 svd 、小波分析、合成分析和相關分析等方法，在分析北太平洋海溫時空分佈特徵的基礎上，著重探討了海溫異常及其年代際變化對我國東部降水的影響，並對降水、高度場和海溫三者之間的關系進行了分析，以試圖尋找三者異常之間可能的聯系，主要結論如下： （ 1 ） 1976年前後，北太平洋海溫經歷了一次明顯的轉變，赤道中、東太平洋厄爾尼諾海區由冷轉暖，暖水范圍增大，中緯度西風漂流區海溫由暖轉冷；在這樣的年代際背景下，厄爾尼諾、拉尼娜事件在不同的時期也有不同的特徵：在76年前，拉尼娜事件發生頻率高，持續時間長，事件起始於負海溫距平；而76年後，則是厄爾尼諾事件發生頻率略高，持續時間長，強度增大，事件起始於正海溫距平。
  7. The experimental results showed that high density of oxygen precipitation and induced - defects were formed after annealing of wafers at moderate and high temperatures

    重摻砷硅單晶在中高溫退火時形成密度較高的氧沉澱及誘生缺陷。
  8. In this paper aircraft has made vertical and synthetic detecting flying purposefully on 9. 17, 2003 according to cloud ' s macro and microstructure. vertical layers and representative places of stratiform cloud on 9. 17, 2003 are analyzed using the observational data of particle measurement system ( pms ), combined with satellite data, radar data, and precipitation data on ground. by this we have got cloud ' s microphysical structure and physical process of the natural precipitation, and the physical effect evidence has been testified according to observational data after lco2 seeding

    本文用綜合觀測的方法，利用機載pms雲粒子探測系統，根據雲系的宏微觀結構特徵進行有針對性的垂直探測飛行，配合衛星、雷達、地面雨量、雨強計網觀測資料對2003年9月17日延安降水性層狀雲系中那些有代表性的部位或垂直分層做細致的觀測分析，獲得雲系的微物理結構和自然降水形成的物理過程，並用觀測事實來驗證人工增雨引晶催化后的物理響應判據。
  9. ( 3 ) solid solution with good solid solution ability were acquired by solid soluting treatment for 25 min at 540 c, 560 c and 580 c, respectively, after that water quenching was carried on. in the case of 580 c, the coarseness of the precipitation at grain boundaries did not happen, equi - part 120 did not emerge at the intersection of three grains, these suggest that over sintering did not happen

    6013合金實驗熱軋板材經固溶處理後於180時效4小時達到峰值硬度； （ 3 ） 540 、 560 、和580固溶處理25min 、水淬，得到了固溶充分的固溶體， 580的情況下晶界析出相未粗化、三晶粒交界處的角度未出現等分的120 ，表明未發生過燒。
  10. Lead and lead alloys. analysis by flame atomic absorption spectrometry or inductively coupled plasma emissions spectrometry icp - es, after separation by co - precipitation

    鉛及鉛合金.共沉澱法分離后通過火焰原子吸收光譜法或感應耦合等離子體放射光譜法進行分析
  11. 4. after heat treatment ni - w - b alloy was both coarsened in grain size and led to the evolution of ni4w and precipitation of ni - b compound

    Ni w b合金電沉積層及其復合鍍層的顯微硬度值比ni w合金電沉積層的顯微硬度高。
  12. After transfecting the shrna based on telomerase htert into hela cells with calcium phosphate co - precipitation procedures, we detected hela cells viability by trpan blue staining method

    以磷酸鈣共沉澱轉染法將shrna轉染hela細胞。于不同的時間用臺盼藍染色法檢測細胞生存能力。
  13. Platinum jewellery alloys - determination of platinum and palladium - gravimetric method after precipitation of diammonium hexachloroplatinate and dimethylglyoxime

    鉑合金首飾鉑鈀含量的測定氯鉑酸銨重量法丁二酮肟重量法
  14. Determination of platinum in platinum jewellery alloys. gravimetric method after precipitation of diammonium hexachloroplatinate

    鉑飾合金中鉑含量測定.六氯鉑酸二銨沉澱后測定重量
  15. Determination of platinum in platinum jewellery alloys - gravimetric method after precipitation of diammonium hexachloroplatinate iso 11210 : 1995 ; german version en iso 11210 : 1995

    鉑裝飾合金中鉑含量的測定.六氯鉑酸二銨沉澱後用重力
  16. Photometric determination of microamounts of silicon in copper, cobalt and nickel after precipitation - separation

    沉澱分離光度法測定金屬銅鈷鎳及其合金中微量硅
  17. The methods for chemical analysis of lead and zinc bulk concentrates - the determination of lead and zinc content - the na 2edta titrmetric method after precipitation separation

    混合鉛鋅精礦化學分析方法.鉛量與鋅量的測定.沉澱分離naedta滴定法
  18. The change of co2 concentration after precipitation within vegetation demonstrates co2 concentration in the vegetation impacted by rainfall and deposition in the rainfall

    釋放量與近地表大氣co 。濃度的相關性分析結果顯示出土壤co 。的釋放是大氣co 。
  19. Therefore, metals moving upwards from mineralizations may be absorbed and form weak geochemical anomalies ( weak signals ) in surface loess. the metals can be effectively extracted by neutral salt. loess - covered area in china is primarily distributed at the semiarid region, the secondary carbonates, which were formed after precipitation of ions through evaporation and capillary processes, are widespread in the surface soil

    黃土覆蓋區主要分佈在乾旱半乾旱地區，次生碳酸鹽在地表土壤中普遍存在，蒸發所產生的毛細作用、地氣流的上升作用等所帶入的各種形式金屬元素，在地表土壤（黃土）與碳酸鹽發生共沉澱或被吸持。
  20. Determination of platinum in platinum jewellery alloys - gravimetric method after precipitation of diammonium hexachloroplatinate

    鉑珠寶合金中鉑的測定.二銨六氯鉑沉澱后的重量法
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