I used to hang my jacket on the arms instead and I don't think we ever actually turned it on.
我总是习惯的把夹克放胳膊上,却从没把他穿上。
A kind of cylinder jacket used in Marine diesel engine is very easy to damage because of adverse working conditions and inborn defect in design.
某船用柴油机气缸套由于其恶劣的工作环境,再加上先天性设计上的缺陷,因此很容易损坏。
During constructing the bored plies or enlarging the foundations, the lighter and more convenient steel jacket box may be used instead of using the steel sheet pile as the cofferdam.
桥梁水下基础施工防水方法较多,当施工钻孔桩或扩大基础时,可以不用钢板桩围堰,而代之以轻便得多的钢套箱。
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