土木工程编译词汇R-36-SCIdict学术词典-... ... 验证滚压 Rolling，proof 辊式千斤顶 Roll，jack 屋顶螺栓 Roof bolt ...
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Quiet now, please. I'm going to call the roll. Jack?
请安静，我开始点名了。杰克？
The utility model is mainly formed by the connection of a movable lock catch (2) and a fixed lock catch (6) via a pin roll (5). The movable lock catch is provided with a lock tongue plug jack.
它主要由活锁扣片（2）和死锁扣片（6）通过销轴（5）连接构成，在活锁扣片上有一锁舌插孔。
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