例句與造句

1. Fire proof valve refers installed in the ventilation , air - conditioning systems to send , and the road back to the wind , opened in a state of fire when the temperature reached 70 degrees , the gas automatically closed in a certain period of time to meet the fire resistance requirements of the stability and integrity of fire resistance , a possible role of the fire fight valves
   防火閥是指安裝在通風、空調(diào)系統(tǒng)的送、回風管路上，平時呈開啟狀態(tài)，火災時當管道內(nèi)氣體溫度達到70時自動關閉，在一定時間內(nèi)能滿足耐火穩(wěn)定性和耐火完整性要求，起隔煙阻火作用的閥門。
2. It's difficult to find fire resistance requirement in a sentence. 用fire resistance requirement造句挺難的