常数多少

constant source───不断的源泉

constant demand───恒定需求

constant dollar───不变价值美元；定值美元

constant dollars───不变价值美元；定值美元

constant flux───恒定磁通

constant menace───不断的威胁

constant motion───恒速运动；匀速运动

The purpose here is to look at a series of processes in which temperature is held constant, and we're going to calculate how much work we get from allowing a gas to expand under various conditions.───目的是让大家了解一下，几个保持温度不变的过程，然后我们将计算，气体在不同膨胀过程中，的对外做功。

not just a constant because how much you rotate depends on where you are.───这不是个常数，因为你的旋转依赖于你所处位置。

Her campaign speeches are a constant reminder of how much she knows about everything, from foreign policy to Labour relations.───她的竞选演讲就是一个恒久的提醒，她对所有事务是如何地了解，不管是外交政策还是劳动关系。

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