韦氏急回机构
whitworth quick return mechanism
摇块急回机构
swinging block quick return mechanism
电机机构
motor operating mechanism
光机机构
optical mechanical construction
卸载机机构的工作
unloader mechanism operation
装载机机构
Mechanism of Wheel Loaders
原型结构构构成法
the formation of the fashion prototype
Heubner回返动脉
Recurrent artery of Heubner
Heubner recurrent artery