移动计算是一个新兴的领域，他的移动性和断接性是最主要的两个特点。
Mobile computing is a new emerging domain, the mobility and disconnection are his key characteristics.
介绍了一种不锈钢复合管液压胀接装置的工作原理及其技术特点。
The working principles and technical characteristics of the hydraulic expansion device of stainless steel clad pipe are introduced.
多层壳体组件具有尺寸精度高、形位公差要求严、粘接难度大等特点。
Multiplayer shells assembly have characteristic, which are high dimension precision, strict form and position tolerance, difficult bond technology and etc.
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