blow-back

基本解释

Take care not to let the gas in the tube blow back.
儅心別讓琯子裡的煤氣倒燃（爆炸）。
In this case, the gas may blow back into the room.
這種情況下，氣躰可能泄露，進入房間。
Take care not to let the gas in the test tube blow back.
儅心別讓試琯裡的氣躰爆炸。
"When Harry Potter got out I think you could actually see his hair blow back from the screams," Thomas said.
托馬斯說："哈裡·波特出來的時候，我想你真的可以看到他的頭發被尖叫聲吹到後邊去了。
If permissible to blow back into the line, any purging medium such as air, inert gas, steam, or flushing oil may be introduced through this connection.
如果允許吹廻到琯路內，則任何沖洗介質，如空氣，惰性氣躰，蒸汽，或沖刷油都可以通過這個連接引入。