例句與造句

1. The system should be flushed before the backflow valve is installed
   在安裝回流閥之前系統(tǒng)應(yīng)該進(jìn)行沖刷。
2. If the system is not flushed until after the backflow valve is installed , remove both check modules from the valve and open the inlet shutoff to allow water to flow for a sufficient time to flush debris from the water line
   如果在安裝回流閥之前系統(tǒng)還為沖洗，則從閥門上拆卸兩個(gè)止回閥模塊，開啟進(jìn)口關(guān)閉閥，讓水流過(guò)足夠長(zhǎng)的時(shí)間來(lái)沖洗水管內(nèi)的堆積物。
3. If the system is not flushed until after the backflow valve is installed , remove both check modules from the valve and open the inlet shutoff to allow water to flow for a sufficient time to flush debris from the water line
   如果系統(tǒng)在防回流閥安裝后仍然沒(méi)有沖洗，則要從閥門上拆卸兩個(gè)止回閥模塊，開啟進(jìn)口關(guān)閉閥，讓水流過(guò)足夠長(zhǎng)的時(shí)間，已從水管線內(nèi)沖洗碎片。
4. It's difficult to find backflow valve in a sentence. 用backflow valve造句挺難的