这些的电子仅仅沿着电线作缓慢移动，每分钟约走一英寸左右。然而，只要电路一接通它们便一齐开始行动。
The separate electrons travel only slowly along the wire, at about one inch a minute, but they all start to move together immediately the electric circuit is complete.
末端质量大于0.02公斤（0.04磅）的玩具上的绳在以80转每分钟的速度旋转时长度应小于50厘米（20英寸）。
Toys with an end mass greater than 0.02 kg (0.04 lb) shall have cord length less than 50 cm (20 in. ) measured when rotating at 80 r/min.
钻孔冲程为12英寸到48英寸。3功率变速轴。每分钟10加仑，每平方英寸1500磅的冷却系统。
Drilling strokes 12 "to 48". 3 HP variable speed spindle. 10 GPM 1500 PSI Coolant System. 200 gallon total capacity reservoir.
钻孔冲程为12英寸到48英寸。3功率变速轴。每分钟10加仑，每平方英寸1500磅的冷却系统。
Drilling strokes 12 "to 48". 3 HP variable speed spindle. 10 GPM 1500 PSI Coolant System. 200 gallon total capacity reservoir.
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