保持手机在待机状态下作业至少需要20毫瓦电力，但是诺基亚希望电源收集最终可以提供50毫瓦电力，足够给一部手机缓慢充电。

It takes at least 20 milliwatts to keep a mobile phone operating in standby mode, but Nokia hopes that power scavenging might eventually deliver 50 milliwatts, enough to trickle-charge a phone.

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这些显示屏能耗极小，静止状态时能耗仅1毫瓦，显示视频时能耗 [也不过]30毫瓦。

These displays sip power, drawing just one milliwatt in a static state and 30 milliwatts when showing video.

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已获得可见区内8种不同波长的输出，在6328埃与6118埃处的输出功率分别为30毫瓦和10毫瓦。

Laser lines of eight different wavelengths in visible region have been obtained with 30 mW output power at 6328 a and 10 mW at 6118 a.

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So, keep in mind that one milliwatt is just the same as saying 1 times 10 to the -3 joules per second.

所以，请记住1毫瓦,和1乘以10的-3次方焦耳每秒,的说法是等同的。

麻省理工公开课 - 化学原理课程节选

Also, what's the energy per photon of this red laser pointer, and then it's also worth trying a calculation dealing with intensity. So let's also try calculating the numbers of photons that would be emitted by this laser pointer, if, for example, we were to use it for 60 seconds and this were a one milliwatt laser.

同样，红色激光笔的,每个光子能量是多少，这也值得用处理强度的方法计算一下,让我们也计算一下,有多少光子会从这个激光笔射出，举个例子，如果我们使用它持续60秒,这里会有一毫瓦的激光。

麻省理工公开课 - 化学原理课程节选