水頭試驗 的英文怎麼說
中文拼音 [shuǐtóushìyàn]
水頭試驗
英文
water head test-
Because of the technical complexity of the turbine for the three gorges project and on the basis of several important technical problems which have been defined in the international bidding documents for 14 generating units in the left bank power station, the owner of the project has decided another some important technical problems based on appraisal and comparison in the bid appraisal stage after the bidding documents are analyzed and the tender documents are cleared by the tenderers
由於三峽工程水輪機技術上的復雜性和挑戰性，在左岸電站14臺機組國際招標文件已明確了若干重大技術問題的基礎上，在機組議評標階段，對招標文件進行分析和投標商對投標文件進行澄清說明后，經評議比選，業主又決策了幾個重大技術問題，主要有：水輪機設計水頭的確定，負傾角葉片水輪機的應用，兩套水力設計，舍棄初期轉輪，蝸殼進行水壓試驗等。A calculative formula and experimental study on loss - of - head of taper nozzle
圓錐形噴嘴水頭損失的計算公式與試驗研究The additional flow is formed by the device of dentoid baffle, and the application of the device of dentoid baffle cooperated with a stilling basin has been investigated by systematic model tests. based on the research results, the hydraulic problems such as the characteristics of hydrodynamic pressure and cavitation on the head of the denotid baffle, the properties of flow under the condition that the device of denotid baffle is used with a stilling basin, the hydraulic computation about a stilling basin, the estimation of energy dissipation and its various affection factors, the mechanism and effect of energy dissipation, and distributions of velocity and pressure and aerating concentration, etc, have been analyzed ; the method and step of hydraulic design of device of denotid baffle by which the additional flow is produced has also been proposed
文中利用齒墩設施實現附加射流，對齒墩設施與消力池聯合應用進行了大量的和系統的模型試驗，分析研究了中低佛勞德數條件下，齒墩墩頭的動水壓強及空化特性，齒墩設施與消力池聯合應用時的流態特性，消力池的水力計算，消能量的估算及其各種影響因素，消能機理和效果，消力池內的流速、壓強特性，摻氣濃度分佈等水力學問題，並提出了實現附加射流齒墩設施的水力設計方法和步驟。Energy consume, electric strength, insulation resistance, ground conductivity, leakage current, microwave leakage, power input, normal temperature, humidity treatment, glow wire, horizontal flame, vertical flame, tracking, ball pressure, rainproof, water splash, dustproof, salt fog, endurance, motor load test, cord flexing, cord pulling, pull & torque test, lamp replacement, construction check etc
能耗、電氣強度、絕緣電阻、接地連續性、泄漏電流、微波泄漏、功率、溫升、濕熱試驗、灼熱絲、水平燃燒、垂直燃燒、漏電起痕、球壓試驗、防雨淋、防濺水、粉塵、鹽霧、耐久性（壽命）試驗、電機負載試驗、電源線彎折、電源線提拉、拉扭力測試、燈頭互換性、安全結構檢查等。Tongbai county of henan province is one of the high - epidemic areas of bovine theileriosis. in 1985, gelatin - protected schizont cell vaccine for 20, 000 cattle was introduced. from ningxia institute of animal husbandry and veterinary medicine against theileria annulata. on the basis of regional tests, the vaccine was applied throughout 16 townships of the county. the annual investigation showed that the safety of the vaccine was 100 %. among the 15, 000 cattle ( including 4, 500 water buffaloes ) inoculated with the vaccine, only 3 cattle suffered from theileriosis. the incident rate was 0. 02 %. however of the 3600 un - inoculated cattle, 2060 heads suffered from the disease. the incident rate was 5. 7 %. the effective protection reached 99. 98 % with a significant social and economic effect
河南省桐柏縣是牛環形泰勒蟲病流行的多發區，對養牛業危害十分嚴重， 1985年該縣從寧夏農林科學院畜牧獸醫研究所引進「蟲苗」 2萬頭份，在區域試驗的基礎上在全縣16個鄉（鎮）進行了大面積防疫注射，經年終統計表明：蟲苗安全性100 % ，注苗15000頭（其中有水牛4500頭） ，發病3頭，發病率0 . 02 % ；未注苗36000頭，發病2060頭，發病率5 . 7 % ，實際有效保護率達99 . 98 % ，取得了明顯的社會經濟效益。Abstract : tongbai county of henan province is one of the high - epidemic areas of bovine theileriosis. in 1985, gelatin - protected schizont cell vaccine for 20, 000 cattle was introduced. from ningxia institute of animal husbandry and veterinary medicine against theileria annulata. on the basis of regional tests, the vaccine was applied throughout 16 townships of the county. the annual investigation showed that the safety of the vaccine was 100 %. among the 15, 000 cattle ( including 4, 500 water buffaloes ) inoculated with the vaccine, only 3 cattle suffered from theileriosis. the incident rate was 0. 02 %. however of the 3600 un - inoculated cattle, 2060 heads suffered from the disease. the incident rate was 5. 7 %. the effective protection reached 99. 98 % with a significant social and economic effect
文摘:河南省桐柏縣是牛環形泰勒蟲病流行的多發區，對養牛業危害十分嚴重， 1985年該縣從寧夏農林科學院畜牧獸醫研究所引進「蟲苗」 2萬頭份，在區域試驗的基礎上在全縣16個鄉（鎮）進行了大面積防疫注射，經年終統計表明：蟲苗安全性100 % ，注苗15000頭（其中有水牛4500頭） ，發病3頭，發病率0 . 02 % ；未注苗36000頭，發病2060頭，發病率5 . 7 % ，實際有效保護率達99 . 98 % ，取得了明顯的社會經濟效益。2. based on the results of experimental data of the tailrace surge tank of yi xing pumped - storage station in jiangsu province, this research investigates the methods for the head loss coefficients of throttled surge tank with linking pipe by means of the method which incorporates experimental results with theoretical analysis
結合江蘇宜興抽水蓄能電站尾水調壓室水力模型試驗成果，採用理論計算與模型試驗結果相結合的方法，對有連接管的阻抗式調壓室局部水頭損失系數的計算方法進行了討論。In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively
本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。To provide necessary data for design bypass pipe, an enlargement to bi liu river reservoir, the following problems have been studied by hydraulic model and theoretical analysis : the energy losses in water head of the bypass pipe system and of the flow - control valve and their scale effects, measurement and calculation of the discharge of the bypass pipe system during the bypass pipe system operation with and without the new water power station, the hydraulic characteristics of the water tunnel and draw - off pipe, the flow rate of the aqueduct bridge and the draw - off pipe and the water elevation of the flow in the aqueduct bridge during the old water power station operation with and without the new water power station
大連市碧流河水庫供水工程取水頭部由引水渡槽、節制閘、進水閘、泄水閘等建築物組成。由於本工程場地條件限制，增設旁通管后布置非常緊湊，管道急轉角度大且轉彎距離較小，對于管內水流流態是否滿足要求，需要經過模型試驗進行論證，以確保工程的可靠性。旁通管具有上水與泄水要求，對其過流能力也要經試驗確定，為碧流河水庫增建旁通管設計提供依據。Automatic sprinkler system requirements and methods of test for sprinklers
灑水噴頭的技術要求和試驗方法Colour coding of taps and valves for use in laboratories
試驗室用水龍頭和閥門的顏色編碼The incident wave height h1 / 3 is in the range from 0. 1m to 0. 25m, and the peak period tp in the range from 1. 0s to 2. 0s. the ratio of s / h1 / 3, which refers to the subface level of wharf deck ( s ) to the incident wave height ( h1 / 3 ), is between - 0. 1 and 0. 7. three different shore connecting types : open - piled, permeable slope with armored 1ayer of dolosse b locks and impermeable slope with armored layer of concrete plate, are set in the experiment for the research on the effects of boundary condition with different shore connecting types on the wave impact
本文的物理模型試驗在大連理工大學海岸和近海工程國家重點實驗室的大波流水槽中進行，試驗中選用的隨機波靶譜為改進的jonswap譜，入射波波高h _ （ 1 / 3 ）范圍為0 . 1m 0 . 25m ，譜峰周期t _ p范圍為1 . 0s 2 . 0s ，碼頭面板的相對凈空（碼頭面板底面距離靜水面的距離s與入射波波高h _ （ 1 / 3 ）的比值）范圍為- 0 . 1 0 . 7 ，其中s / h _ （ 1 / 3 ）為負值時表示碼頭面板底面位於靜水面以下。Falling head permeability test
變水頭滲透試驗Falling head permeability
變水頭試驗The following conclusions are gained : ( 1 ) the located shear band prongs the ligament near the top crack tip and the structure may occur shear - mode fracture at the angle of 155 ? to crack when load is 87. 92mpa ; the mode of fracture of the flange joint structure is not possible to be void - mode ; ( 2 ) it is proved that loading and then unloading repeatedly can not increase the possibility of invalidation of the structure when the times of loading and unloading are not too more when load is operating pressure ; the structure is safe when the vessel is operating ; ( 3 ) in the fe model of the thesis, not considering the influence of water pressure test which is in the process of fabrication of vessel in fe results in larger deviation in analysi
得出了以下結論：在8792mpa的載荷下筒體一封頭連接結構處的集中剪切帶貫穿韌帶，可能發生沿與原裂紋線成155 「角方向剪切型斷裂；筒體一封頭連接結構不可能發生韌窩型斷裂； （ 2 ）在工作壓力下進行次數不多的反復加、卸載，結構不會破壞，也不會喪失安定性：結構在工作狀態下是安全的； m在本文的彈塑性有限元模擬計算中，對于裂紋尖端進行力學分析時，不考慮壓力容器製造過程中水壓試驗的影響，將導致計算結果出現較大的偏差； （ 4 ）筒體完全屈服時的載荷為92石3mpa ，封頭完全屈服時載荷為86Hydraulic pressure test of long distance pressure water conveyance culvery junction
長距離有壓輸水箱涵接頭水壓試驗Vitrified clay pipes and fittings and pipe joints for drains and sewers - test methods
排水管和下水道用陶管和管配件及管接頭.試驗方法Constant head test
恆定水頭試驗A series of hydraulic model experiments of water flow, head losses and flow state in reservoir under various conditions are carried out for the design of the dashuzi pumped - storage plant
摘要本文結合大樹子抽水蓄能水電站下庫進出水口試驗任務，對側式短進出水口在不同工況下的流速分佈、水頭損失、庫區流態等水流特性進行了水力模型試驗研究。Rising head test
上水頭試驗分享友人