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The front end of the measuring rod is provided with a disc, and the outside of the disc is provided with a sticking layer.
测量杆的前端设 置有圆盘,圆盘的外侧设置有粘贴层。
youdao
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The front end of the measuring rod is provided with a disc, and the outside of the disc is provided with a sticking layer.
测量杆的前端设 置有圆盘,圆盘的外侧设置有粘贴层。
youdao