under water pumps 中文意思是什麼
under water pumps
解釋
液下泵-
This procedure can imitate the single well pumps water the chronometer calculates at all point water level in district declines deep with horary variety ; study the sport law of the rivers ; solve definitely flow draw water issue wanton boundary the wells of termses, predict that dives under water in the location, guide and construct and excavate the progress, appraise the rationality of the precipitation scheme
此程序可以模擬單井抽水時計算區域各點水位降深隨時間的變化，研究水流運動規律；求解任意邊界條件下的井定流量抽水問題，預測潛水位，指導施工開挖進度，評價降水方案的合理性。 -
Aim of this study was to meet the need for development of tribological parts in pumps. at room temperature tribological properties of different sliding pairs of silicon carbide and alumina - based ceramics were tested using a laboratory tribometer in the ring - on - plate geometry under reciprocating sliding linear contact in different media, such as distilled water, aggressive media and air
本文針對目前泵用摩擦零部件材料發展的需要，在實驗室摩擦磨損試驗機上研究了按環/塊線接觸方式作往復運動條件下的碳化硅和氧化鋁基陶瓷材料摩擦副在水、化學腐蝕性介質作潤滑劑和無潤滑時室溫下的摩擦磨損特性。 -
On august 31st a federal judge ruled that giant pumps supplying water to much of southern california were killing the smelt, which is protected under the endangered species act
8月31日，一聯邦法官裁定向南加州供水的巨型水泵殺害了屬于《瀕危物種法》范圍內的胡瓜魚。 -
Type qj submersible deep - well motor pumps are mainly used to lift under ground water, irrigation and industrial water supply
Qj深井潛水泵主要用於抽取地下水，農田灌溉，工業給排水。 -
Application : cl series marine pumps are used at cabinbottom to cool water and fight fire. it is able to carry sea water under 70 degrees. fresh water and other nonerroding liquid
一、概述： cl系列船用立式離心泵適用於船舶壓載艙底泵、冷卻泵及消防泵等：可用於輸送溫度不高於70的海、淡水及無腐蝕性的其他液體介質。 -
Until now, there have been a few reports on the damage of the water pumps caused by sand and water cavitation. by use of the test loop for solid and liquid two phases, under the condition of 3 % head drop, the damage location and relative degree of the sand and water cavitaiton occurred on the impeller were tested and researched. the result was, them, compared with the results under the condition that water cavitation occurred and no cavitation but only wear occurred. the differencts were analyzed. the analysis result can be used as the basis of the further research and the improvement of the impeller shape
目前含沙水汽蝕對水泵損傷方面的報導甚少，本文利用固液兩相流試驗臺，對離心泵閉式葉輪在含沙水汽蝕時（ 3揚程下降點）的損傷部位和相對程度進行了試驗研究，並將此結果與清水介質發生汽蝕時的損傷情況[ 13 ]及含沙水無汽蝕情況下的磨損情況[ 7 ]相比較，對其差異進行了分析，為今後進一步探討葉輪損傷機理和葉型改進提供了實驗依據。 -
Analyses and compares the energy consumption of circulating water pumps under different adjustment modes
分析比較了不同調節方式下的循環水泵能耗。 -
According to the supply system composed by parallel connection water pump, many kinds of operation proposals in a single pump were put forward to provide the greatest possible flow on both sides of the demarcation point in the scope of the flux changes ; identified the system of pumps, electromotor, speed governor imitate method of characteristics curve of the power device and its rotating speed, efficiency, energy consumption calculation under different condition ; the analytical methods used for the operational plan for comprehensive evaluation of the economic and safety and optimal results
摘要針對由並聯水泵組成的供水系統，提出了在以單泵可能提供最大流量為分界點的兩側流量變化范圍內具有多種運行方案；確定了在不同工況下，該系統中水泵、電機、調速器特性曲線的擬合方法及其各動力裝置中轉速、效率、能耗的計算式；採用解析的方法對各種運行方案進行了經濟性和安全性綜合評價，並給出最優結果。
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