回转机械动力学
Dynamics of Rotational Machine
机械回转反吹袋式除尘器
machinery rotation anti blow bag filter
斗轮机回转机构
slewing mechanisms of bucket wheel loaders
输煤机械转机防尘
dustproof of coal conveying machine during operation
斗轮机回转大轴承
large swing bearing of bucket conveyer
掘进机回转架
whirling stand of boring machine