水面減壓 的英文怎麼說
中文拼音 [shuǐmiànjiǎnyā]
水面減壓
英文
surface decompression-
However, indiscriminate overdevelopment or poor practices can dewater aquifers and cause compaction of sediments, loss of storage space, land subsidence, and degradation of quality.
盲目的過量開采和不適當地應用,能疏干含水層,並導致沉積層的壓密,地下水儲存空間的減少,地面沉降和水質惡化等。Through the special studies on impacts to atomizing and humidifying effect from such factors as the firing pin type, centrifugal structure, higher spraying pressure, less aperture, initial water temperature and original state of the air, some conclusions are obtained, such as : the centrifugal nozzle with firing pin type, high pressure and little aperture has bigger air eddy and atomizing angle. the spaying liquid has high velocity. the droplet is small, and the heat and mass transfer velocity is high
通過對撞針型結構、離心式結構、較高的噴水壓力、較小的噴嘴孔徑、噴水初溫及待加濕空氣初狀態對霧化加濕效果的作用原理的重點分析,得到:撞針型高壓小孔徑離心式噴嘴具有較大的空氣渦與霧化角,噴出的液體流速高、液滴小、水與空氣傳熱傳質速率高,撞針型結構提高了霧化加濕效率,高壓小孔徑的特點為霧化加濕提供了較大的能量,而噴水初溫的升高會減小水的粘性力和表面張力,從而優化加濕效果。The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological
分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象,依據astm標準及國際通用文物保護研究方法與評估準則相結合,通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定,及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響,對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。Case - hardened reducer for rolling press in the cement industry
水泥工業用硬齒面輥壓機用減速機On the basis of analyzing the working circumstance and prosperity of downhole drilling string of the surface dynamic rotating drilling vertical well, the force prosperity and failure forms of downhole drilling string are focused on. and further research has been done on the vibration damage of downhole drilling string as well as the construction and work prosperity of vibrating - proof hydraulic shocker absorber
本文在對地面動力旋轉鉆井直井井下鉆柱的工作環境和特性加以分析的基礎上,著重對鉆柱在井下的受力特性以及損壞形式進行了分析,並對鉆柱在井下的振動危害以及用於防止振動的水力加壓減震器的結構、工作特性等一些規律進行了深入的探索和研究。The calculated result from an example shows that the stable sectional area reduces with the increase of working head, or the decrease of the tailrace tunnel length
計算結果表明,尾水調壓室斷面面積隨水輪機工作水頭的增大或尾水洞長度的縮短而減小。To avoid manual labor of chiseling - grossness, in the area of second - stage concrete construction, permanently non - removed metal molding boards nets are used as molding boards of first - stage concrete. substitution joints of reinforcing steel bars for traditional electric welding and usage of equipments for joints of reinforcing steel bars efficiently improve strength of junctions and rate of connecting reinforcing steel bars, and safety of construction and stability of quality, and greatly reduce cost. it ' s possible that three gorges project become top - ranking project in the world by study on systems engineering of high - strength concrete construction
混凝土縫面處理採用高壓水流沖毛技術,大大提高了施工工效,減少了倉面污染;模板工程大量採用定型鋼模板施工技術,提高了壩體混凝土成型質量和工程進度;在二期混凝土施工區域,為免除人工鑿毛勞動強度,採用永久性免拆金屬模板網作為一期混凝土模板;鋼筋連接改進傳統的電焊連接方式,採用大量採用鋼筋接頭機械連接技術,有效提高了接頭強度和鋼筋連接速度,施工安全性大大加強,質量穩定性有效提高,經濟成本大大降低;三峽二期工程持續高強度混凝土施工系統工程的研究,使三峽工程成為名符其實的「世界一流工程」成為可能;三峽二期工程混凝土溫控綜合技術的應用,有效降低了壩體混凝土溫度的產生;混凝土表面處理及裂縫處理技術的應用,提高了建築物的整體性和耐久性。When a bubble rises, it will experience less pressure in the surrounding liquid and therefore become larger. however, the change of pressure is very small in view of the short path from the bottom of the glass to the liquid surface. therefore, pressure change is not the major cause of bubble growth
雖然氣泡在玻璃杯中上升時,周圍的水壓會逐漸減少,令氣泡膨脹,但由於從玻璃杯底至水面的距離其實很短,水壓的變化不是太大,所以這不是氣泡變大的主要原因。Test results indicated : with the hoist of altitude, the increase of ice amount and the rise of pollutant, the average flashover voltage reduced. the character exponent generally depends on the insulator profile, ice amount, ice state and pollution severity etc. by means of a high - speed camera, a data acquisition system and high voltage test facilities, a series of the flashover processes on ice surfaces were record. the experimental results form this study and the subsequent theoretical analyses suggested : the thermal ionization of the air in front of an arc root resulted in arc movement ; the electrostatic force had an auxiliary effect of impelling arc propagation ; the electrical
通過對攝像機、數據採集系統及高壓試驗裝置記錄覆冰絕緣子表面閃絡電弧的發展過程的試驗結果進行理論分析得出:弧根周圍空氣的熱電離導致了電弧的發展,靜電場力對電弧的發展起到了加速作用,電擊穿僅發生在閃絡最終的跳躍階段;通過測量閃絡過程中的放電電壓、泄漏電流、閃絡時間、覆冰水電導率、電弧長度及電弧半徑等參數,得到了不同階段電弧(電弧起弧階段、電弧發展階段及完全閃絡)的發展速度、臨界電弧長度均隨覆冰水電導率的增加而減小。Ghg - electrical grade activated silica powder is produced by way of mingling on the basis of electrical grade silica powder. it has activt effect on surface & make silica powder mingled with resin, raise cohesive force between resin & silica powder, raise the water - resestance on the sunface and the compressive strength of pour object, reduce sediment, gradation & split, increase filler of silica powder, and replaced inpoted products on the producing line of imported dry type transfomer & high tension mutual induc tance equiment, it has been the best pouring insulate materual in electrical trade
電工級活性硅微粉是在電工級硅微粉的基礎上進行偶聯化處理而製成,具有表面活性作用,能使用硅微粉與樹脂發生交聯,提高樹脂與硅微粉的粘結力和界面增水性,提高澆注體抗沖擊強度,減少沉澱、分層、開裂現象,增加硅微粉的填充量,在引進的乾式變壓器、高壓互感器生產線上已成功地代替了進口產品,成為電工行業理想的環氧澆注絕緣材料。The plane - wave analytic solution of the coupled fluid - air - solid system and the fem model of air cushion isolations are applied to study the influence of air cushion on earthquake response of dams. the calculations show that air isolation will reduce the hydrodynamic pressure significantly and restrain the dam vibrations during earthquakes. if the dam and reservoir is isolated by air cushions, it will decrease the hydrodynamic pressures by more than 90 % and the seismic stresses by 20 - 30 %
將本文首次提出的水體-氣體-結構系統的平面波作用理論解和三維有限元模型,應用於溪洛渡雙曲拱壩的抗震安全性和氣幕隔震可行性研究中,表明氣幕對高拱壩具有良好的隔震性能,可降低動水壓力90以上,壩體地震拱應力20 30 ,減震效果顯著,並使壩體的抗拉安全系數從0 . 93提高到3 . 58 。In the summer stratified water column, the deeper the maximum depth of food distribution is, the stronger the dvm is performed ; the increase of the gradient of temperature in the thermocline layer can decrease the magnitude of the dvm and form the thermal barricade to the copepod ; the effects of the predation pressure on dvm is complex. on the one hand, the variations in the distribution depth of the predation pressure vs. the thermocline layer or the depth of the maximum food can modify the dvm patterns of the copepod. on the other hand, different predation pressure induces different dvm patterns
在夏季分層水體中,食物的最大分佈深度越大,動物向下遷移的幅度也越大;溫躍層的溫度梯度增大可以減小動物遷移的幅度,成為橈足類垂直遷移的溫度屏障;捕食壓力對垂直遷移的影響較復雜,一方面,捕食壓力的分佈深度與溫躍層或食物峰值的相對位置的變化能夠改變橈足類垂直遷移的模式,另一方面,捕食壓力強度不同,橈足類垂直遷移的幅度也不同,捕食壓力越大,遷移的幅度越大,當捕食壓力增加到一定程度,橈足類停止向上的遷移,大部分時間呆在水體深層,可能進入捕食壓力引起的「滯育」狀態。The simulative calculation results show that all the three measures mentioned herein have larger effects on the infiltration, runoff, flood peak flow and overland flow and can greatly alleviate the pressure of the draining pipeline, clip the flood peak and increase the infiltration as well, if they are taken as the additional important measures of urban drainage for flood control
模擬計算的結果顯示,以上3種方式對入滲、徑流、洪峰流量、坡面流等均有較大影響,作為城市防洪排水的重要輔助措施,可以極大地緩解排水管道壓力,同時削減洪峰、增加入滲。( 5 ) the spring greenland sea - ice extent is larger ( smaller ) : then during the following summer the high of the japanese sea is stronger ( weaker ), and the low of the asian land is stronger ( weaker ), which make the pattern of low west and high east easily ( uneasily ) form ; the ascending movement over north china is strengthened ( weakened ) ; the summer monsoon of east asia is stronger ( weaker ), then the southeastern, warm and damp airflow towards the north china is stronger ( weaker ), and the cold airflow of the high level over the north china is also stronger ( weaker ), which make the convergence of the cold and warm air over north china easily ( uneasily ) form ; the sst of the east pacific ocean is lower ( higher ), while the sst of west wind drift is higher ( lower )
( 5 )春季格陵蘭海冰面積偏大(小) :後期夏季日本海高壓偏強(弱) ,而大陸上低壓也偏強(弱) ,易(不易)形成西低東阻的形勢;華北地區的上升運動增強(減弱) ;東亞夏季風偏強(弱) ,向華北地區輸送的西南暖濕氣流偏強(弱) ,而對應高空華北地區上空冷空氣活動偏強(弱) ,利於(不利於)華北上空冷暖空氣的交匯;夏季赤道東太平洋海溫偏低(高) ,西風漂流區海溫偏高(低) 。在以上的環流背景下,華北夏季降水偏多(少) ,易澇(旱) 。The effect of variation in surge shaft section size upon the reflection of water hammer pressure and the speed of quality fluctuation attenuation
調壓井斷面尺寸變化對水錘壓力反射及質量波動衰減速度的影響On current projections, substantial parts of the world risk being left uninhabitable by rising sea levels, reduced freshwater availability or declining agricultural capacity. this will exacerbate existing migratory pressures from rural areas to cities, from unproductive land to more fertile land, and across international borders
從目前的狀況來看,海平面的上升、淡水資源的減少以及農業生產能力的下降,將使世界上絕大多數地區淪為不適宜人類居住的不毛之地,這將進一步加劇從鄉村到城鎮、從土地貧瘠地區到豐腴地區乃至跨國界的移民潮所帶來的壓力。An examination of old bones has led scientists to suggest that sperm whales diving deep beneath the surface of the ocean can suffer from decompression sickness or the bends just as human divers do
一項關于對古老骨頭的研究引發了科學家提出了抹香鯨當潛入海面以下時會和人類潛水員一樣遭受減壓病,或者稱氣栓癥的設想。With the fund item sponsored by the national laboratory of hydrodynamics, the study on measurement method of propeller - induced pressure with using self - propulsion model has been carried out in depressurized towing tank
在脈動壓力的模型測試研究方面,本文在水動力學國家重點實驗室基金項目的資助下,對在減壓拖曳水池中利用自航模進行空泡螺旋槳誘導的脈動壓力的測試方法進行了研究。The prediction of propeller - induced hull pressure fluctuation in non - uniform flow is studied by using theoretical calculation and model experiment systematically. an intact method and computer program for the prediction of unsteady cavitating propeller - induced hull pressure fluctuation in non - uniform flow is set up in this paper. the measurement of propeller induced hull pressure fluctuation in depressurized towing tank carried out in this paper is the first time inland
本文從理論計算和模型試驗兩個方面系統地研究了不均勻流場中螺旋槳空泡誘導的船體表面脈動壓力的預報問題,建立了一套完整的預報非定常空泡螺旋槳誘導的船體表面脈動壓力的方法和程序,並在國內首次完成了在減壓拖曳水池中進行空泡螺旋槳誘導的船體表面脈動壓力測試。About energy economization, mainly introduced how new technologies and methods are used in utilizing of hydraulic head, decreasing pressure and quantity, setting of fire - fighting system, water pump, supplying of hot water etc
關于節能,主要介紹了在給水管網水頭的利用方面,減壓節流問題方面,生活與消防系統設置方面,水泵方面,開水供應方面的節能新方法、新技術。分享友人