例句與造句

1. To avoid this discharge , install a spring - loaded check valve ahead of the backflow assembly to " lock - in " the downstream pressure
   如果放置在坑內(nèi)，則應(yīng)該采取措施使得排放總是在地面上，或?qū)τ诳觾?nèi)排放，要確保在安全閥下方配置一個(gè)適當(dāng)?shù)臍庀丁?
2. It's difficult to find spring-loaded check valve in a sentence. 用spring-loaded check valve造句挺難的