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1·I used my thumbnail to tighten the screw on my lamp.

我用拇指指甲拧紧了灯上的螺丝。《柯林斯英汉双解大词典》

2·Regulators may tighten the screw as well.

监管者或许会紧紧螺母。

3·Install the exhaust pipe support and tighten the screw.

安装排气管支架并拧紧螺丝。

4·Move the feed DOG up or down to perform adjustment, then securely tighten the screw.

上下移动送布牙调节高度，然后拧紧紧固螺丝。

5·Loose soleplate screw of the roller shelf, and adjust the central height of the two rollers by increasing or decreasing cushion, then tighten the screw.

松开罗架的底板螺丝，用增垫和去垫的方法调整两罗拉的中心高度，然后再拧紧螺丝。

6·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。

7·Fixed screw between air-conditioning fan motor and fan blades loose and maintenance method of this fault is very simple, only needs to be fixed between the screw blades and motor re tighten.

空调外机风扇的电机和风叶之间的固定螺钉松脱，这一故障的维修方法十分简单，只需重新将扇叶和电机之间的固定螺丝重新扭紧即可。

8·Install belt buckle and tighten with the fastening screw.

安装安全带扣并用紧固螺钉固定。

9·Tighten the disc height adjusting screw.

压紧盘片，调整螺旋高度。

10·Tighten the fastening screw and clip the coin box in to place.

拧紧紧固螺钉并将投币盒夹到适合的位置。