当树木长大枝叶茂盛时,它们可以起到隔声的作用.Trees also serve as sound Barriers when full grown and leafed out.实施减轻环境影响的措施,包括建造隔声屏障和广泛植树.Environmental impact abatement measures including noise barriers and extensive planting.本文介绍一种新型电动机隔声罩.Th...
Surging is ordinarily associated with separation and re - attachment in the diffuser.喘振通常与气流在扩散段内的分离和再附相联系.Both diffuser and the grid were applied in engineering.这两项技术已在工程中成功地推广应用.Grille diffuser on a duct end. Diffuser ...
This has been my worst time for injuries since I started as a professional footballer...这是我当职业足球运动员以来受伤来得最不是时候的一次。One of the worst hardships is having so little time to spend with one's family.最大的痛苦之一是几乎没有时间和家人在一起。S...
The amoeba is a very simple organism.变形虫是很简单的生物体.It was an infectious organism that he studied.他研究的是一种可传染病菌的微生物.Genetic engineers transpose or exchange bits of hereditary material from one organism to the next.遗传工程师将某一生物...