精品文献
机械类标书英文格式及样板
各类保函格式中英文对照
各类保函格式中英文对照
机械专业英文翻译
Design of machine and machine elements Machine design Machine design is the art of planning or devising new or improved machines to accomplish specific purposes. In general, a machine will consist of a combination of several different mechanical elements properly designed and arranged to work together, as a whole. During the initial planning of a machine, fundamental decisions must be made c