This instrument was composed of four pedicles nails, two longitudinal connecting rods and two transverse connecting plates.
该器械由四枚椎弓根钉，两根纵向连杆和两块横向连接板组成。
The connecting part is connected with a clamping groove matched with the roller stand and two connecting plates as two side walls of the clamping groove.
所述连接部设有与罗拉座相配合的卡槽、和作为卡槽 两侧边壁的两个连接板。
What welding methods do you use in connecting the plates, frames, and beams?
在焊接钢板时，肋骨，甲板横梁时，你们用什么焊接方法？
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