阻火器是用来阻止易燃气体、液体的火焰的蔓延和防止回火而引起爆炸的安全装置。

Hinder firearm to is it prevent flammable gas, liquid flame from spread and prevent flash back but cause safety device of explosion to used for.

youdao

燃料输送设计有防止回火的保护装置，有防止燃料在炉膛内爆燃的泄爆机构。因此锅炉运行安全可靠。

Fuel delivery with protection device to prevent tempering, owning venting mechanism to prevent the fuel deflagration in the furnace. Therefore the boiler is of safe and reliable operation.

youdao