每块板都钉在两根垂直的木制支撑物上。
电缆具有耐单根垂直燃烧特性。
The cable has property of flame retardant (single, vertical test).
然后把一根垂直放进袋去。就向一个带夹子的铁环。
Provide a vertical rod inside the bag, such as a "ring stand", with clamps.
在圆周的圆心竖一根与盘面垂直的直杆。
用了根相互垂直的丝，可以制成方向传感器。
Perpendicular with the root of the wire, the direction sensor can be made.
用了根相互垂直的丝，可以制成方向传感器。
Perpendicular with the root of the wire, the direction sensor can be made.
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