Coupled with circuit equations, the opening time of movable contact also can be calculated using iteration with the restriction of contact force.

通过耦合电路方程，并以动触头上的预压力为约束，经迭代运算，确定动触头的打开时间。

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Shunt trip Shunt trip is a feature added to a circuit breaker or fusible switch to permit the remote opening of the breaker or switch by an electrical signal.

分励脱扣分励脱扣是线路断路器或可熔电闸的一个特性，可通过远程信号来进行分断或转换。

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The ignition switch allows the driver to start and stop ignition by opening and closing the circuit between the electrical engry source and the other ignition components.

驾驶员可通过开关电动源和点火元件之间的电路来开始启动和熄火。

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The Turkish Grand Prix in Istanbul reverts to August after being held in May this year, with Barcelona's Circuit de Catalunya hosting the opening European race, the Spanish Grand Prix.

BBC: Abu Dhabi to stage 2009 F1 finale

Closed-circuit TV evidence showed Kasab and an accomplice opening fire on passengers at one of Mumbai's busiest train stations, an assault that left dozens of people dead.

BBC: Surviving Mumbai gunman convicted over attacks

Toseland, who enjoyed his best performance of last season at this circuit, was among the pacesetters over the opening laps and ended up seventh fastest despite his misdemeanour - merely a result of pushing the front end too hard as he chased an improved lap time.

BBC: Matt Roberts' MotoGP column