Compound ventilation mode is adopted in this system, so that natural draught and mechanical ventilation can alternately function under different conditions.
采用混合式通风方式，自然通风和机械通风可以依据不同的条件交替运行。
2
Pay-off strand, stranding cartage, compact die stand, counter meter, double draught wheels, take up and traverse device, mechanical transmission system and electrical control system.