gear down

You have to gear down when you drive uphill.

上坡行驶时必须换慢挡.

TOWER: PH-ABC , check you have the gear down?

塔台: PH -ABC 请确认你的起落架放下了 吗 ?

When the nose landing gear leaves the ramp and the main landing gears do not, pitch down moment is provided by the ramp reacting force upon the main landing gears, and the pitch rate is decreased;

前轮离舰释放载荷、后轮尚未离舰的过程中，甲板支反力提供低头力矩，使离舰初期俯仰角速度减小；

"Settle into the driver's seat, fasten the seat belt, shift into first gear and put your foot on the accelerator, push down the handbrake*"

坐上驾驶座，系好安全带，挂一挡，脚放在油门上，放下手刹

We're unable to crank landing gear down.

我们无法摇下起落架。

This paper lays down a computer analogy method of load bearing in the flexible gear.

本文建立了谐波齿轮传动中的关键元件─—柔轮承载的计算机模拟方法.

The driver put the car in gear and went down the street.

司机启动车子沿大街开去.

She selected a low gear and started down the track carefully.

她选了低速挡小心翼翼地沿小径下行。