The resulting limit, given in units of bits per second, is the absolute maximum rate of error-free communication given signal strength and noise level.
在给定信号强度和噪声水平的情况下,以比特每秒为单位给出的最终限制是无差错通信的最大绝对速率。
The U.S. bacterial limit is no more than 500 colony-forming units of bacteria per milliliter of water.
美国的细菌数量上限是每毫升水不超过500个菌落形成单位。
The greatest concern the authors raise is space debris-pieces of "junk" that orbit the earth, with the potential to cause serious damage if they collide with operational units, including the ISS.
两位作者提出的最大担忧是太空垃圾——环绕地球运行的“垃圾”碎片,如果它们与包括国际空间站在内的运行单位相撞,可能会造成严重损害。
The United States Department of Agriculture,the USDA, is helping farmers to pay for and operate mobile slaughter units.
VOA: special.2010.08.03
suppose I asked you to time a 100 meter spring in the Olympics, but I give you a stopwatch that is measured in units of 15 seconds?
如果我要求你,在奥林匹克数给100米短跑计时,但我会给你一个秒表,它可以测出15秒的大小?
If you don't have the units, then if you say the answer is 19, then we don't know what it means.
如果没有的话,比如你的答案是十九,那我们就不知道这是什么意思
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