锁紧装置包括卡楯伸进凹槽、过纵向末端的小孔。
The locking structure includes projections projecting into the slots that engage holes through the longitudinal ends.
纵向末端的厚度，大于凹槽的宽度减去卡楯的高度。
The longitudinal ends have a thickness that is greater than the width of the slot minus the height of the projection.
纵向末端的厚度，大于凹槽的宽度减去卡楯的高度。
The longitudinal ends have a thickness that is greater than the width of the slot minus the height of the projection.
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