坚固的用螺丝固定的长方框，每隔25毫米有一个嵌孔，用来固定槽沟、板、缆束及线路图插袋等。
Strong rectangular frame fixed by screws, an inset hole every25 cm to fix the slotting auger, guard board, bunches of cables and circuit diagram sidekicks, etc.
垫圈当中挖空，边缘有六个小孔，其中一个孔靠近当中挖空部分的边缘嵌着一颗橡胶珠。
The gasket had a center cut-out and six holes along the edge. The inside edge of the cut-out, along with one of the holes, was lined with a bead of rubber.
应用推荐