他们中有很多人表情阴郁，留着平头，一看就是警察。Many of them were policemen, with their heavy faces and cropped hair.他正往墙上钉一枚平头钉用来挂画.He is hammering a tack into the wall to hang a picture.他用双手摸了摸他平头上柔软的短发。He rubbed his hands over the soft brist...
Professor has constructed a measuring sonde , based on magnetostriction.教授根据磁致伸缩研制了一种测量探头.An extended model describing magnetization and magnetostriction in ferromagnetic amorphous metal ribbon is introduced.用推广了的模型,讨论带状...