循环式 meaning in Chinese

cdt
endless system
revolving

Circulating material ropeway . cars . specifications
循环式货运架空索道.货车.技术条件
Circulating current type pilot - wire protection
电流循环式表示线?电方式
Oxygen - generating closed - circuit breathing apparatus
循环式氧气呼吸器
Design rules for bi - cable circulating material aerial ropeway
双线循环式货运架空索道设计规范
Vertical circulating mechanical parking system
竖直循环式停车设备

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