two-directional flow 中文意思是什麼
two-directional flow
解釋
二向流- two : n. （pl. twos）1. 兩人；兩個東西，一對。2. 二的記號。3. 兩點鐘。4. 兩歲。n. -ness
- directional : adj. 1. 方向的。2. 【無線電】指向的，定向的。
- flow : vi 1 流，流動。2 （血液等）流通，循環。3 流過；川流不息；（時間）飛逝；（言語等）流暢。4 （衣服、...
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Bleach ball valves must be permanently marked externally with : the word bleach ; two opposing directional arrows, one inscribed with flow and the other with vent ; and nsf ( symbol of the national sanitation foundation international, indicating approval for use with potable water )
漂白劑球閥必須在外部永久性標志：漂白劑；兩個反向箭頭，一個標志流向，另一個標志排出孔；以及nsf （美國全國衛生設備基金會國際的標記，表示已認證可用於飲用水） 。 -
A new high - speed ert experiment system based on the bi - directional current pulse technique is designed and developed. on - line observation is realized for simulating gas / liquid two - phase flow using this experiment system
提出並研製成功了一種新型的基於雙極性脈沖電流激勵的高速電阻層析成像系統並實現了垂直管道的氣液兩相流的在線監測。 -
This kind of converter has the advantages such as high frequency electrical isolation, simple topology, two - stage power conversion ( lfac / hfac / lfac ), high power den sity, bi - directional power flow, soft commutation of output cycloconverter, uni - polarity spwm waveform, no audio noise etc. the correction and advance of the new concept of the 220v + 10 % ( 50hz ) / 220v ( 50hz ) uni - polarity phase - shifted controlled voltage mode ac / ac converter with high frequency
這類變換器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac hfac lfac ） 、功率密度高、雙向功率流、輸出周波變換器實現了zvs換流、單極性spwm波、無音頻噪音等優點。
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