Open vent needle valve and bleed air from hose. Then close vent valve.
开启排气针形阀，并从软管排放空气。然后关闭排气阀。
Frequently we need to open a vent to let in a little cold air!
我们经常需要打开一个口子以放进一些冷空气！
Vent the piping and test valve body cavity to remove air or steam.
排放管道和试验阀门体腔内的空气或蒸汽。
Open needle valve "b" to bleed air and then close "b" and vent needle valve.
开启针形阀“B”排放空气，然后关闭“B”和排气针形阀。
Open valve a to vent air from the vent hose.
开启阀门A从排气软管处排出空气。
Install air vent at door window if necessary.
必要时在车窗处安装通风口。
Fill system - vent air from system.
向系统注水-从系统中排出气体。
Fan, pump, air duct, water pipe, vent.
风机，水泵，风道，水管，风口。
It may have been because the DVD burner was blocking the air vent.
它可能是因为DVD刻录机挡住了气孔。
This air vent will become a renewed facility of iron smelting industry.
该种高炉风口将成为炼铁行业高炉风口更新换代的新设备。
This air vent will become a renewed facility of iron smelting industry.
该种高炉风口将成为炼铁行业高炉风口更新换代的新设备。
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