真臨界流速 的英文怎麼說

中文拼音 [zhēnlīnjièliú]
真臨界流速 英文
true critical velocity
  • : Ⅰ形容詞(真實) true; genuine; real Ⅱ副詞1 (的確; 實在) really; truly; indeed 2 (清楚確實) cl...
  • : Ⅰ動1 (靠近; 對著) be close to; face; overlook 2 (來到; 到達) be present; arrive 3 (將要; 快...
  • : 名詞1 (相交的地方; 劃分的界限) boundary 2 (一定的范圍) scope; extent 3 (按職業、工作或性別等...
  • : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
  • : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
  • 流速 : [機械工程] velocity of flow; strength; [水文] current velocity; current speed; flow rate流速管 pi...
  1. The x - ray diffraction, scanning electronic microscope and the squid were used to characterize the properties of the mgb2 core in mgb2 / fe tapes and wires. the effect of the proportion of mg, b and sic as well as the sintering parameters on the phase formation, microstructure and the critical current densities of mgb2 / fe tapes and wires was discussed in details. the results showed that the high purity of mgb2 core could be synthesized by both the traditional vacuum sintering and the sparking plasma sintering and the vacuum sintering environment restrained the oxidation of mg effectively

    相對于傳統空燒結, sps燒結方式成相度快、樣品晶粒細小均勻、 mgb2超導芯緻密性好、晶間連接優良,因而sps燒結樣品的密度明顯高於傳統空燒結樣品,其中未摻雜的帶材樣品經過sps800 , 15分鐘燒結后,自場下的密度jc值在10k時達到8 . 64 105a / cm2 ,而且隨著測量溫度和外加磁場的增加, sps燒結樣品的密度下降率比傳統空燒結樣品緩慢,在20k ,自場時為5 . 97 105a / cm2 , 20k , 3t時,密度值仍大於104a / cm2 。
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