constant speed drive [机] 等速传动 ; 定速传动 ; 定速运转 ; 恒速传动装置
constant speed motor 定速电动机 ; 恒速电念头 ; 等速电念头 ; 定速电念头
constant speed control [机] 等速控制 ; [机] 恒速控制
Constant-Speed Fuel Economy 等速油耗 ; 油耗
constant speed engine 恒速发动机 ; 定速发动机 ; 定速引擎
constant speed airscrew 恒速螺旋桨 ; 定速螺旋桨
constant speed governor 恒速调节器
constant speed propeller [航] 恒速螺旋桨 ; 定速螺旋桨 ; 等速螺旋桨
It allows the train to maintain a constant speed through the twists and turns of existing track.
它可以让火车在现有蜿蜒盘旋的轨道上保持匀速。
And, it moves at a constant speed.
还有,它以一个恒定的速度移动。
This ratio also means that an unpowered hang-glider flying at a constant speed moves 15 metres forward for every one metre it descends.
这个比例也意味着一架无动力悬挂式滑翔机以恒定速率飞行时高度每下降1米,可以向前滑翔15米。
You put a chunk of wood on a table and you try to move it at constant speed.
你把一大块木头放在桌子上,试着让它匀速运动
Whenever you see a particle moving in a circle, even if it's at a constant speed, it has an acceleration, v square over r directed towards the center.
只要看到质点做圆周运动,即使是匀速圆周运动,也存在一个加速度,大小为 v^2 / r,方向指向圆心
And the relationship that he put forth is that the momentum is equal to Planck's constant times nu divided by the speed of light, or it's often more useful for us to think about it in terms of wavelength.
爱因斯坦提出的关系式是,动量等于普朗克常数,乘以υ除以光速,或者用波长来表示,通常更容易让我们想明白。
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