拆下电插头(9)以及接头(10)上的堵盖。

Remove the blanking caps from the electrical connector (9) and the receptacle (10).

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从客舱再循环风扇（15）上拆下堵盖、从单向活门上拆下衬套。

Remove the blanking plugs from the cabin recirculation fan (15), the sleeve (1) and from the check valve (7).

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推进剂的燃烧特性及喷管堵盖打开压强对点火升压过程有较大影响。

Propellant property and nozzle closure opening pressure have an important effect on the ignition transient.

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