jet expansion 中文意思是什麼
jet expansion
解釋
射流脹大-
It is the first time in china to set the speed increase gears form in the new compressor and to adopt several new techniques including the condenser with oil - separator built - in, jet exhauster and electrical expansion valve used to supply liquid for the flooded evaporator in the unit
本壓縮機在國內首次採用了帶增速齒輪的形式，冷水機組在國內內首次採用了內置油分冷凝器、引射器和電子膨脹閥對滿液式蒸發器供液等新技術。 -
The relations between the parameters of gas charging and exhausting, heat quantity through the shell of tube ( q ), the length of the tube ( l ), the ratio of gas charging time to gas exhausting time ( ), the frequency of the jet flow ( f ), the ratio of the expansion ( ), the nature of thermal separator and the unsteady flow in the tube were established
建立了進、排氣參數、管壁散熱量（ q ） 、管長（ l ） 、充、排氣時間比（ ） 、射流頻率（ f ） 、膨脹比（ ）等參數與熱分離機性能及管內非定常流動的關系，並分析了有關因素對熱分離機性能的影響。 -
And then, some improvements have been made on the old single tube pressure wave refrigerator experimental system. the experimental research, such as the ratio of gas charge time to gas exhaust time ( ), the frequency of the jet flow ( f ), the ratio of the expansion ( ), the length of the tube ( l ) and the heat transfer condition, has been carried out on the improved experimental system. the results were drawn as the following : the refrigerating efficiency will be heightened by augmenting when is in 0. 0405 to 0. 1842 ; the highest cooling efficiency will be
實驗考察了有關因素對製冷效率和最佳射流頻率（ fopt ）的影響並進行了理論分析，結果表明，在= 0 . 0405 ~ 0 . 1842范圍內，製冷效率（ ）隨的增大而提高;隨射流頻率（ f ）的變化出現多個峰值，在本文實驗參數范圍內下，第二個峰值點的效率比第一個峰值點高;隨著膨脹比（ ）的增大，和fopt都略有增大，且低下的增幅比高下的大;強化管外換熱，可使fopt降低、明顯提高。 -
In parallel with this quick expansion of worldwide communications capacity came the development and volume production of digital computers and related information processing systems, and the rapid development and expansion of the worldwide system of jet transportation
與世界范圍快速增長的通訊能力相併行的是數碼計算機發展和其產量以及與之相關的處理系統的發展和航空運輸在世界范圍的快速發展和壯大。
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