方(钻)杆
a square shaft is arranged in the middle of each universal switch;
所述的两万能开关的中间设有方轴;
Stock leaking square plansifter without shaft is a common problem universally existing in every flour mill.
无立轴高方平筛的窜漏粉问题是各个粉厂普遍存在的共性问题.
Coal pillar mining under mine shaft and industrial square in downfold thick seam
向斜厚煤层条件下井筒与工业广场煤柱开采
a press spring and a power spring are arranged on the square shaft.
所述方轴上安装压簧和动力弹簧。
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