机构结构设计
design of morphology of a mechanism
平面连杆机构结构设计与分析
designing and analysis of the planar linkage mecha
原型结构构构成法
the formation of the fashion prototype
吹气卷扬机
pneumatic flotation machine
大吨位智能卷扬机
large-tonnage intelligent hoist
单卷扬机运行法
single-hoist operation method
电控卷扬机
electric controlled hoist
防爆电动卷扬机
explosion-proof electric hoist