常見例句Well chamher heat preservation airheating machine used the frequency conversion closed-loop control.All electrical machinery movement realized the common control with PLC. 井筒保溫空氣加熱機采用變頻閉環(huán)控制，所有電機運行用PLC來實現(xiàn)集中控制。airheating radiator 熱風器, 熱風供暖器, 空氣加熱器 返回 airheating