點空蝕 的英文怎麼說
中文拼音 [diǎnkōngshí]
點空蝕
英文
cavitation pitting-
High performance and high precision copper and copper alloy strips, electrolytic copper foil, lead frame, copper clad and printed - circuit board, special enameled copper wire, fashioned copper bar, track contact wire, medium and high elastic copper strips for interconnecting devices, precision alloy copper pipes for ac and cooling appliance, over - long and corrosion - resistant copper alloy condenser pipe, seamless cooper water pipe in housing construction and other copper fine and deep processing products will be highly developed in jiangxi province
江西將重點發展高性能高精度銅及銅合金板帶、電解銅箔、引線框架、覆銅板及印刷電路板、特種漆包線、異型銅排、軌道接觸線、接插元件用中高彈性銅帶材、空調與製冷精密合金銅管、超長耐腐蝕銅合金冷凝管、建築用無縫銅水管等10項銅精深加工產品。With a small specific gravity, light weight, they float on the surface of water ; after oil absorption, they won ' t be deformed, loosened or effected by temperature ; they are able to be acid tolerance, anti - corrosion, easy to store and other characteristics ; they can be widely used for the cleaning machinery manufacturing, aviation, petrochemical and other industries : cleaning of oil stains on water surface, storage cells, bulges, a large amount of other oil stains, the recovery of see surface oil leakage, and preventing the oil leakage from diffusing in tanker, petroleum tanks, oil boxes
具有比重小，重量輕，浮於水面，吸油后不變形、不鬆散、不受溫度影響、耐酸堿、不腐蝕、易於儲存等特點，被廣泛應用於機械製造、航空、石化等行業油污的清理：水面浮油清除，蓄電池、船腹等大量油污清除，海面漏油回收處理，油車、油槽、油箱、油桶等漏油防止擴散。Is a hard, brittle, corrosion - resistant, gray to white metallic element extracted from wolframite, scheelite, and other minerals, having the highest melting point and lowest vapor pressure of any metal
顏色呈灰色或棕黑色，硬度高，延性強，熔點極高，常溫下不受空氣侵蝕主要用途是製造燈絲和高速切削合金鋼，各種鎢電極，也用於光學儀器，化學儀器方面。The alteration of wall rock is mainly of propylitization, silicification, carbonatization, argillization and beresitization. the characteristics of alteration show the zoning and overlapping on the space. from the inner to outside of the ore vein zoning is : silicification inner core - argillization - beresitization - propylitization
蝕變在空間上既有分帶性又有相互疊加的特點，其分帶從礦脈中心向外依次為硅化內核?泥化帶?黃鐵絹英巖化帶?青盤巖化帶。This pump is of jet pump with circulating water asworking liquid and designed by negative pressure produced from spraying liqunid. it is ar new vacuumair pump, which can provide with circulating cooling water to the reaction of device at same time
該泵是以循環水為工作流體，採用射流技術產生負壓而設計的一種新型真空抽氣泵，它不僅是一種真空抽氣裝置，同時還能向反應裝置中提供循環冷卻水，該泵具有不用油、無污染、耐腐蝕、噪音低、方便靈活等特點。In order to make sure the point where an empty bubble breaks and breakage function on the solid wall due to cavitatin, some exploration work is performed
為確定空泡潰滅點，並由此確定空蝕對固壁的破壞作用作了探索性工作。Ceramic bearing which has thermostable, anti - corrosive, the self lubrication good character. widely applied in aviation, astronautics, national defense. rolling contact fatigue is one of the main inactivation types of bearing
陶瓷軸承，具有耐高溫、耐腐蝕、自潤滑性好等優點，廣泛應用於航空、航天、國防等領域，其主要失效形式為滾動接觸疲勞，研究和改善潤滑劑的抗疲勞性能是提高軸承滾動接觸疲勞壽命的重要途徑。It tell us : the abrasive capability of fly ash ; the similar calculation of ash erosion ; the calculation of ash erosion in the tube in turn and tube out of turn ; the reason of tube abrasion for gas flue ; the influence of air parameter for fly ash erosion ; the influence of changing temperature ; the influence of the flue gas composition, etc. next, it advances the solving measure ; reduce the flue gas velocity ; reduce the concentration of fly ash ; responsible construction : replace smooth tube with spiral tube ; use the new material of abrasion ; fuel desulfurization ; reduce so3 of flue gas ; raise flue gas temperature, making it up the dew point ; use the abrasion - resistance material to resist abrasion
討論了飛灰磨損性能、管壁受飛灰沖蝕的近似計算、灰粒對順列管和錯列管的磨損計算、煙氣走廊引起對流管束的磨損機理、空氣動力參數對飛灰沖蝕的影響以及受熱面壁溫變化及煙氣成份對飛灰磨損的影響等問題。接著提出了解決的措施：降低平均煙氣流速；降低飛灰濃度；使用鰭片管、螺旋翅片管代替光管；選擇合適的結構及排列方式，減少煙氣中so3的含量；提高受熱面壁溫使之大於煙氣的露點溫度；採用抗腐蝕材料作受熱面等防腐蝕的措施。With a small specific gravity, light weight, they float on the surface of water ; after oil absorption, they won ' t be deformed, loosened or effected by temperature ; they are able to be acid tolerance, anti - corrosion, easy to store and other characteristics ; they can be widely used for the cleaning machinery manufacturing, aviation, petrochemical and other industries
具有比重小，重量輕，浮於水面，吸油后不變形、不鬆散、不受溫度影響、耐酸堿、不腐蝕、易於儲存等特點，被廣泛應用於機械製造、航空、石化等行業油污的清理：水面浮油清除，蓄電池、船腹等大量油污清除，海面漏油回收處理，油車、油槽、油箱、油桶等漏油防止擴散。The numerical simulation and experimental research made on the characteristics of the clearance cavitations in kaplan turbine are described herein ; in which the analysis mainly is concentrated on the characteristics of leakage - vortex caused by the flow of the clearance between blade tip and blade chamber, that occurs at the front - pressure side of the blade, and the intensity of the secondary - flow - vortex ; furthermore, the relationship in between the leakage - vortex, secondary flow vortex, cavitations and erosion are analyzed as well
摘要對軸流轉槳式水輪機輪緣間隙流動及空化特性進行數值模擬和試驗研究，重點分析輪緣間隙流動在正面頭部泄漏流動所引起的泄漏渦帶、二次流動的漩渦強度和空化特性，以及泄漏渦帶旋轉、二次流動的漩渦與空蝕和磨損之間的關系。The case of sag series is utilizing the advanced vacuum ti plating techniques, therefore very beauty in looking and also corrosion - resistance. its ability to anti - corrosion is 10 times higher than zinc plating
其中， sag外裝式提前器外殼採用真空鍍鈦先進工藝，具有美觀不脫鍍的優點，其耐腐蝕性是普通鍍鋅的十倍。The use of titanium was largely spurred on by the aerospace industry after wwii, which sought stronger materials than the aluminumalloys they were using, while maintaining the stringent requirements for weight
鈦合金是廣泛地運用於航空航天技術領域的高性能材料，其重量輕強度高韌性好耐腐蝕是其最顯著的特點。They are widely applied in the tower of coking desulfurizing, benzene scrubbing, naphthalene scrubbing, ammonia scrubbing and chemical fertilizer hot water saturation tower, electric power plant wet cooling tower
該系列填料具有比表面積大、空隙率高、傳質系數大、抗堵塞、抗腐蝕、耐急冷急熱、使用壽命長、易安裝的優點，是一種理想的塔填料。Through the analysis, it is shown that : 1, while fabricating the grating, the principle of selecting the parameters is : the period should be as large as possible, the etching depth should be small and filling factor should approach to 0. 25. 2, if selecting the parameter combine the selecting principle and the requirement of concrete application, the space of selecting the parameter should be larger than before. 3, while the period to. 4a, the surface profile has no effect on the reflectivity
通過分析發現： 1 、在製作有一定特性的光柵時，光柵參數的選擇原則為：周期的取值應盡量的大，刻蝕深度的取值應盡量的小，占空比的取值應盡量靠近f = 0 . 25 ； 2 、以參數的選擇原則結合製作的具體應用要求宋選擇光柵的參數，則各個參數的優化空間更大； 3 、當光柵的周期t 0 . 4時，表面面形對反射率沒有影響； 4 、運用臨界周期點隨折射率的變化規律，可以避免由於選擇光柵周期過大而出現一級衍射，從而導致製作失敗。During the long active service time, the structure maybe presents all kinds of structural damage because such reasons as tired accumulating, environment corroding and natural calamity function, etc. in order to find those damages early, nip in the bud, and lower the damage of accidents, it is great meaning full to research the technique of online damage monitoring of the long - span lattice roof structure
結構在服役期間，由於疲勞累積、環境腐蝕及自然災害等作用，可能出現結構損壞，因此，為了能夠及時發現問題，防患於未然，把事故損失降到最低點，在結構正常使用情況下，對大跨空間網格結構進行在線損傷監測研究，就顯得極有現實意義。Fiber reinforced plastics have used widely in every walk of life, especially in aviation and spaceflight because they have more merits than common metal materials, such as light quality, high intensity and so on. they have replaced metal step by step and hold an advantaged position
纖維增強復合材料與一般的金屬材料相比，具有質輕、高強度、耐腐蝕性、抗沖擊性、整體成型容易等優點，在各行各業已經獲得普遍的應用，特別是在航空航天工業中。復合材料結構正在逐步取代金屬結構，占駐有利地位。With superior properties such as high thermal conductivity, high hole mobility, excellent chemical, thermal and radioactive stability, p - type diamond electrode can also greatly improve the stability of the devices, which complement the current electrode. the effect of boron concentration on the electronic properties of diamond films was investigated by raman spectroscopy, x - ray photoelectron spectroscopy and
結果表明，摻雜金剛石膜突出的光學及電學性質及優異的抗高溫、抗腐蝕能力，機械強度大等優點，使其在作lppp發光器件的電極時，能克服一般電極在空氣中易於氧化、穩定性差的缺點，大大改善器件穩定性，提高器件壽命。And that system has a great help especially for the safeguard and solving cases. aimed at advancing the speed of extracting the key characters, improving the veracity, cutting down the cost of time and space, this task put forward a new template thinning algorithms after analyzing the principle, disadvantages and advantages of many thinning methods including condition thinning, template thinning and thinning in morphology maths. this algorithm with good collection has less thin - hair, and avoid excessive erosion
為了使計算機識別時能很快的提取關鍵特徵，提高準確度，減少時空耗費，本課題在分析了多種傳統的條件細化、模板細化、形態數學上的細化等多種細化方法的原理和優缺點后，提出了一種新的模板細化演算法，該演算法毛刺較少，避免了過度的腐蝕，同時具有良好的連通性。分享友人