Screw down mirror on door frame.
将后视镜拧紧到车门框架上。
Screw down any loose floorboards.
用螺钉固定住所有松动的地板。
Straight-through, right angle cast steel screw down vertical storm valve.
直通、直角铸钢可闭立式防浪阀；
This paper introduces the screw down system of this automatic control system.
本文介绍了此机组八辊轧机的压下控制系统。
I took out just one screw and the whole thing came down.
我只拿掉一个螺丝钉，整个东西就坍下来了。
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。
Place a standard nut on the screw and tighten it down securely.
放置一个标准的螺丝和螺母拧紧了安全。
Place a standard nut on the screw and tighten it down securely.
放置一个标准的螺丝和螺母拧紧了安全。
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