na.機止回閥
單向閥；逆止閥；止逆閥
例句
1.A double check valve assembly shall be installed at each noted location.
雙止回閥總成應該安裝在每個指定的位置。
2.and a pilot operated check valve is linked with a valve block on the oil cylinder.
液控單向閥與油缸上的閥塊相聯接。
3.DUAL CHECK VALVE BACKFLOW PREVENTER For low hazard cross- connections . Continuous pressure applications .
雙止回防回流閥用於低危險交叉連接。持續壓力應用場合。
4.dual way check valve for the "outstanding new products in Shanxi Province. "
雙路止回閥為“山西省優秀新產品”。
5.The debris is prevented from flowing back out of the bailer by a check valve.
利用壹個止回閥防止碎片從撈砂筒中流出。