ball grains 中文意思是什麼
ball grains
解釋
（糖的）晶簇；團塊-
Experimental results show that the grains were gradually triturated to namometer size with milling time and the grain size might be 30nm or so, but the grain size was not decreasing after the powder has been milled for 25 hours. the nano - sized sic was synthesized by ball milling of si and c mixed powders which rare earths as a additive was added to
結果表明：隨著時間的延長，粉末逐漸細化至納米級，可以細化到30nm左右，但球磨時間超過25h后粉末顆粒繼續細化的速度明顯放慢，並且在球磨的過程因為晶粒細化和晶粒內部發生了嚴重的晶格畸變，納米粉體x射線衍射峰產生嚴重寬化。
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