D speed protection is a key technology of the Operation Control System (OCS) for high speed Maglev transportation.

二维速度防护是高速磁悬浮交通运行控制系统(ocs)的关键技术之一。

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The result shows that there are three basic types of sound speed profile structure in sea areas of China: D-type, S-type and T-type.

结果表明，中国近海的声速剖面结构可分为深海型、浅海型和过渡型三个基本类型。

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The data show that those people with lower vitamin D levels exhibited slower information-processing speed.

数据显示，维他命 D 水平较低的那些研究对象，在信息处理速度上比较慢。

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What it means is if you'd release a rock at that location one second before with a certain speed that we can calculate, it would've ended up here with precisely the position and velocity it had at the beginning of our experiment.

它的意义在于,若在该处以特定速度抛出一个物体,这个速度可通过计算得到,一秒之后,物体会运动至我们设定的起点,并且速度为我们设定的初速度

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But if you are purchasing a superyacht you would want a vessel that was transglobal and you'd want a reasonable speed.

CNN: September 15, 2011 -- Updated 1540 GMT (2340 HKT)

Apps can randomly crash and the OS doesn't always respond to my inputs with the speed I'd expect of a quad-core device.

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Now he knew he'd be travelling at the speed of light and yet he correctly surmised that he would see everything else rushing past him and he would feel like he was standing still.

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