例句與造句

1. The so / sb shutoff regulator is used in the gas line to automatically shut off the fuel when the combustion air or any remote signal pressure drops below a predetermined limit
   Sb切斷閥用于燃氣管線自動切斷燃料，當燃燒空氣或者任何遙控信號的壓力低于預設定極限值。
2. It's difficult to find signal pressure in a sentence. 用signal pressure造句挺難的