物理学家，我们以他命名功的单位,他是第一个演示出,热能和机械能相等的人。

James Joules The physicist James Joules, after we we call after him the unit of work was the first to demonstrate that heat energy and mechanical energy are really equivalent.

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定距尺度(interval)—在定距尺度中，任意两个相邻测量单位之间的距离(也称为间距)是相等的，但零点是任意的。

Interval - an interval scale is a scale of measurement in which the distance between any two adjacent units of measurement (also known as intervals) is the same, but the zero point is arbitrary.

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在幕后，LVM系统以大小相等的“块”(称为“范围”)为单位分配存储量。

Behind the scenes, the LVM system allocates storage in equal-sized "chunks", called extents.

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There's no reason why these two attributes had to be proportional, but they are proportional and they are equal by choice of units and you can ask, "Is this just an accident or is it part of a big picture?"

我们不知道这两个质量为何成比例,但它们确实成比例,而且如果选择合适的单位还会相等,你会问,"这种情况纯属偶然,还是这只是物理学大体系的冰山一角"

耶鲁公开课 - 基础物理课程节选