... 载重线圈 load line disc 载重线圈中心(干舷) centre of disc 载重线证书 load line certificate ...
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drilled centre of a disc 圆盘的中心钻孔
TAKE a cardboard disc and punch two holes in it, on either side of its centre.
取一张圆纸板，在其两侧的中心分别打两个孔，用多根线穿过每个孔。
A disc lit by a stroboscopic light rotates. The disc is covered with a series of pictures which move in a spiral from the outer edge to the centre.
一张由频闪观测仪旋转照亮的光盘，光盘本身被一系列图片覆盖，由外部边缘向中心螺旋式旋转。
The balancing machine of the gravitation type is an equipment for detecting the unbalance of disc-shaped parts by means of the moment caused by centre-of-gravity shift.
重力式平衡机是利用偏重力矩检测盘状零件不平衡度的一种设备。
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