因为这时流动可成为音速流动,所以这些小孔本身有一种节制作用或稳定化作用.The holes themselves have a restricting or stabilizing effect because flow may become sonic.本书的主要内容是介绍聚合物稳定化的基本方法.The primary purpose of this book is to present a fundamental approach ...
实在太暖和, 阳光并非正中的照着,斜斜对正棉被.It was too warm. Sunlight was slanting on to the quilt.在正中的这一边,他们向着我们走来.The ones on our side faced us as they passed.正中的后排座位是最佳的.The rear seat is best....
A solid headspace capillary gas chromatography for the determination of residual organic solvents asarone was established.建立了固体顶空毛细管气相色谱法测定细辛脑中有机溶剂残留量.Methods: Using heavy caliber capillary gas chromatography with headsp...