By trilobal spinning subassembly, the shaped polycarbosilane fibers were prepared from polycarbosilane by melt spinning.是什么意思_By trilobal spinning subassembly, the shaped polycarbosilane fibers were prepared from polycarbosilane by melt spinning.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句