Its main return circuit adopts thyristor contactless switch, so can turn off circuit quickly, precisely and reliably.

该系列点焊机主回路均采用晶闸管无触点开关，电路关断时间快、准确、可靠。

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A practicable transistor on-off circuit is presented which can measure capacitance and dielectric constant accurately.

介绍一个实用的晶体管开关电路，用它能够较准确地测定电容和介电常量。

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The shortcomings of them are analysed and an automatic current backing off circuit with high accuracy is described in this paper.

本文分析了这两种方法的缺点，给出了一种测量精度高的电流自动补偿电路。

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Jarno Trulli ran off the circuit, Hamilton passed him and then allowed the Toyota man to re-pass him.

BBC: Coulthard on Hamilton row

In 2002, after CarMax began to see a profit, it was spun off from Circuit City and started adding outlets again.

FORBES: Magazine Article

After an initial lay-off, she was forced off the circuit for a second time after being knocked out of the French Open in the second round.

BBC: SPORT | Tennis | Henin-Hardenne beaten on comeback