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submergence n.沉沒,浸入;淹沒,泛濫;潛水,潛航。

submergible

Under the influence of the submergence the turbulence intensity are quite high at the end stage of burning . however , the turbulence intensity decreases obviously at the medium stage and the preliminary stage of burning because the flow disturbance is eliminated by the mixture of injection flow and main flow 受噴管潛入的影響,結束時刻流場的湍流脈動非常強烈,而中間時刻和初始時刻,由于加質流與主流的強迫混合可以消除氣流擾動向下游的傳播和擴展,流場的湍流脈動明顯減弱。

Thus , two 2d elastic finite - element models of tunnel are respectively established , both of which go through i wall - rock sector and wall - rock sector by means of large - scale finite element software ansys . thereby , the magnitude of wall stress , displacement , submergence of arch roof and terrestrial sedimentation in tunnels will be attained via numerical simulation of the whole construction process 通過運用大型通用有限元軟件ansys ,分別建立隧道穿越類圍巖地段和類圍巖地段的兩個二維彈塑性有限元模型,進行施工全過程的數值模擬,得到隧道中墻應力和位移以及拱頂下沉和地表沉降值。

Areas of concern include the possible submergence of entire small island states , dramatically receding coastlines , and the development of new shipping routes . these could all lead to disputes over maritime zones and other territorial rights . such disputes may require resolution through international politics as well as international law 氣候變化正深刻地影響著全人類,我們所擔心的問題是,全球的小島國是否會因此而被海水淹沒,海岸線的急劇消退以及新航線的發展趨勢,而所有這些都可能導致國家海域及領土爭端,這些問題恐怕只有運用國際政治手段、通過國際法律的途徑才能得以解決。

The effects of reynolds number , back surface of nozzle , aft - dome configuration and degree of submergence on aft - end internal flow were studied by both cold gas simulation and numerical simulation . it is showed that the separated flow is sensitive to the change of reynolds number and aft - end cavity configuration 最后,利用冷流模擬與數值模擬相結合的方法,研究了雷諾數、噴管背壁形狀、后封頭形狀和潛入深度對燃燒室尾部流場的影響,結果表明流動的分離對雷諾數和背壁區幾何邊界的變化很敏感。

The model of variability of submergence depth is established based on the law of volume balance , and the changing trends of parameters like submergence depth etc are analyzed . according to the principle of supply and discharge balance , the method to predict oil yield is presented . subject to different objective functions , the corresponding optimum combinations of suction parameters are analyzed , and the importance of choosing objective function to optimum combination of suction parameters is emphasized 本文研究了油井流入動態關系,根據井筒內液量平衡原理,建立了沉沒度變化的數學模型,分析了沉沒度等參數變化規律;根據油井供、排平衡原則,得出了抽油泵排量系數相對穩定狀態下產量預測的關系;分析了不同目標函數下,油井抽汲參數的組合效果,指出了目標函數選取對參數合理組合的重要性。

The statistics on the measured data in a oil - field shows the submergence depth and discharge coefficient are very low , some key measures for improving discharge coefficient and sucker rod pump performance are presented ; the applications of discharge coefficient to practice are illustrated with examples 通過對某具體油田區塊測試數據分析,指出該區塊油井存在沉沒度、排量系數低的現象,提出了提高抽油泵排量系數、改善工作性能的措施。舉例說明了排量系數計算在生產管理中的應用。

Based on current forcecalculation of varying current velocity distribution and static analysis of mooting lines ' a new method of dynamic balance is proposed , which can makebfp to be vertical in submergence , and assure bfp to touch seabed in favorable position and insert into preconcerted depth successfully 通過分析平臺沉放過程中的受力,采用動態調平的新方法,可以使平臺在沉放過程中保持垂直,保證桶形基礎以良好的初始姿態觸底并順利地插入到預定的深度。

Finally the great crystal was tuned too high , activating volcanoes and melting mountains , ultimately causing the submergence of atlantis , and perhaps even the axis shift of the earth itself 最后巨大的水晶是被調諧的太高,激活了火山和熔巖,終于導致了亞特蘭提斯的沉沒,甚至有可能地球本身的地軸也產生了變動。

The using rules about the fatigue strength in “ design and calculation standard for submarine structure “ is worked out according to the standard that the ultimate time of submergence is less than 500 現行的“潛艇結構設計計算規則”中關于疲勞強度的設計,是按照極限下潛次數不超過500次的標準進行校核。

Submerged nozzles are commonly preferred in large solid rocket motors . the aft - end internal flows are very complex because of submergence . the flow process and mechanism are not very clear yet 大型的固體火箭發動機通常采用潛入式噴管,其燃燒室尾部的流動非常復雜,流動過程及其機理尚不十分清楚。

Deep submergence rescue vehicle ( dsrv ) is one of the main methods of rescuing and ensuring of submarines . underwater interfacing is the key technique in dsrv rescuing performance 深潛救生艇( dsrv )是潛艇救援的主要救生和保障手段之一,其中水下對接技術是深潛救生艇實施救援的關鍵技術。

In many cases it will be found that the minimum recommended submergence to prevent vortexing will be equal to , or greater than , the minimum submergence required to prevent overheating 多數情況下,人們會發現所建議的預防渦流的最小潛水深度會等于或大于預防電機過熱的最小潛水深度。

Or looking - glass mangrove ) can withstand submergence in the sea for several hours a day and yet still grow to the height of a three - storey building 銀葉樹( heritieralittoralis )是其中一種最高大的紅樹,能抵御每天幾小時被海水淹浸,可生長至三層樓高。

For wet - pit installations , it is recommended that the low water level elevation be specified to meet or exceed the minimum submergence to prevent vortexing 對于濕井設備安裝,建議所確定的低水位高度應該達到或超過預防渦流的最小潛水深度。

The minimum recommended submergence to prevent overheating will normally be noted in the pump manufacturer ' s product information 在泵制造商的產品說明書內通常會注明為防止過熱所建議的最小潛水參數。

Thus , once proper anti - vortexing submergence is established , the concern about motor overheating will frequently be eliminated 因此,一旦配置了適當的防渦流潛水深度,通常就不需要擔憂電機過熱。

Submergence of bfp is a key procedure to exploit marginal oil and gas field economically 平臺沉放過程中,受到沿深度變流速水流的作用,并受到系泊錨索的約束。

It is widely used to test castable on porosity by submergence in physical property inspection 浸液法測定氣孔率在物理性能檢測中已得到廣泛應用。

An ample water supply is probably the greatest advantage of soil submergence for irrigated rice 大量供水可能對灌溉水稻淹水土壤有很大好處。