释义 |
mechanical workS短语⁷⁹⁹⁷⁸⁺⁹ 基本例句 机械功 功和能 The self- lubricate coating on the surface of aluminum alloy was prepared by synergistic technology, which was based on the study of the analysis of the import mechanical work piece. 通过对进口工件涂层形貌、成份的分析和研究,在铝合金表面制备出自润滑协合涂层。 cnki All these methods have many disadvantages such as huge facilities, large investment, complex mechanical work and potential environment pollution, high cost for operating and maintaining. 这些方法存在着设备庞大、投资高、能耗大,可造成一定的环境污染、运行维护费用高等缺点。 lib.swpu.edu.cn |