When the appointed time came to blast Yuri Gagarin into orbit, he simply pushed a button that completed the ignition circuit and watched the motors start.

当推送尤里·加加林进入轨道的预定时刻来临之际，他只是简单地按下一个按钮闭合点火电路并看着发动机启动。

youdao

Use relays, contactor, button, air switch and travel switch etc low-voltage constitute control circuit called relay contact control circuit.

使用继电器、接触器、按钮、空气开关、行程开关等低压电器构成的控制电路称为继电接触控制电路。

youdao

Button control digital potentiometer X9511 is consists of time delay circuit removed dithering, mono - stability circuit, preventative dithering trigger.

按钮式控制数字电位器x 9511由延时去抖动电路、单稳电路、触发器组成。

youdao

Button completed a race simulation at the Circuit de Catalunya on Saturday at the same time as Ferrari driver Felipe Massa.

BBC: Jenson Button says there is more to come from McLaren

"It's been a tough weekend for them (Red Bull) but also we are going to a circuit where they will be very quick, " Button said.

BBC: I must find form, admits Button

Webber, who battled with Button for more than half the race in Valencia, could finish only ninth as the Red Bulls struggled to find any pace on the stop-start street circuit and is now 20.5 points behind Button.

BBC: I must find form, admits Button