Motor Mounting Plate and the Fuselage Plate need to be on same level. Don t tighten the motor Socket screw, make necessary adjustment then tighten the screw.

电机座与机身需要在一个水平面上，在安装后先不用拧紧电机夹头与机身夹头的螺丝，少许用力调平后再拧紧螺丝。

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The bulb should just screw into the socket.

把灯泡拧到灯口上就行。

《牛津词典》

Otherwise, you might feel as if you are using a socket wrench as a hammer hitting the handle of a screw driver to loosen a nut and bolt.

否则，您可能感觉到像用锤子一样使用一个套筒扳手来敲击螺丝刀手柄而拧开螺栓的螺母。

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The machine screw is supposed to fit perfectly because it is screwed into a socket expressly designed to accept it.

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