Allow for some shrinkage in both length and width.长、宽上都预留出一定的缩水量。the shrinkage of heavy industry重工业的萎缩There has been much shrinkage of the clothes in the wash.这些衣服洗后已缩了很多....
Hydraulic jacks under the machine produce the movement.是机器下面的液压千斤顶造成的移动.The boat has no fewer than five hydraulic pumps.这艘船配有不少于5个液压泵。A group of apprentics were operating the hydraulic press.一群学徒正在开动水压机....