... 方块饰 square 方立柱 box type column 方木脚手架 gabbart scaffold ...
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Average type beam drill is composed of base, inside and outside column, rocker arm, main spindle box and job.
普通型摇臂钻床由底座、内外立柱、摇臂、主轴箱及工作组成。
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Step Type Side Arranged Box Column;
阶梯式侧挂箱式立柱;
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