the expansion and contraction of the metal金属的膨胀与收缩Contraction of the timbers left gaps in the fence.木料收缩,结果围墙露出缝来.The forces of expansion are balanced by forces of contraction.扩张力和收缩力相互平衡....
他对那件茄克衫简直喜欢极了.He just flipped over that jacket.不知你们是否有企鹅牌茄克衫?I wonder if you stock any Penguin Jacket?他穿了一件肘部打着各种补钉的茄克衫.He wears a jacket of sorts with patches at the elbows....
回顾了微尺度反应技术的发展及其在纳米材料制备中所展现的广阔前景.Microscale reaction technology was reviewed and its prospect in nanomaterials was discussed.概述了微尺度热传导理论的几种模型及其求解方法.Theoretical models of microscale heat transfer and solving approaches are...