back diffusion 中文意思是什麼

back diffusion 解釋
反擴散
  • back : n 1 背，背部；背脊；背面，反面；背後，後部，後面，裏面。2 （指）甲；（刀）背；（手）背；（書）背...
  • diffusion : n. 1. 散布，發散。2. 傳播，普及。3. 冗長。4. 【化學】滲濾。5. 【物理學】擴散，漫射。
  1. The oil film trajectory oscillates back and forth with the ebb and flood current, and its thickness decreases and area increases during the drift process with oscillation due to the diffusion

    油膜軌跡隨落潮流和漲潮流來回振蕩，因擴散作用，在往復漂移過程中厚度變小，面積增大。
  2. The conversion efficiency of 14 % is possible if the al back surface field and the diffusion process are improved

    L 。若進一步改善鋁背場及擴散工藝條件，有望達到14的效率。
  3. In order to solve problems existing in current measuring methods for radon exhalation rate ( such as the effect of unequilibrium radon and its progeny, humidity effect, leak and back - diffusion effect, etc. ), based on the principle of surveying radon and its progeny in the medium surface, a rapid arid accurate method for measuring radon exhalation rate taking advantage of the rad7 radon detector was established

    摘要本文根據介質表面氡析出率的測量原理，針對目前國內外現有的氡析出率測量方法中存在的一些問題，如對氡及其子體的不平衡影響、濕度效應及泄漏和反擴散等影響未作修正等，實驗研究了一種用rad7型氡氣檢測儀快速測定土壤、巖石、建材和尾礦等介質表面氡析出率的方法。
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