不过，我们还希望填充一些元素名、元素符号、元素号和原子量，可以在模板中使用xbl： content元素来选择这些内容。

However, you also want to include the name, symbol, atomic number, and atomic weight; you can select each of these by using an XBL: content element in the template.

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面量图、点子图及比例符号图中三种最常见的定量专题地图。

Three common quantitative thematic maps are choropleth maps, dot maps and proportional symbol maps.

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应使用国际单位制所规定的物理量的单位和对应的符号。

Units of physical quantites and their symbols shall be those of the international standardized system.

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It's important for you guys to know that everything you write down in the notebook or blackboard as a symbol is actually a measured quantity.

其重要性就在于,你们要知道,你们记在本子上或者写在黑板上的任何物理符号,实际上都是测量量

耶鲁公开课 - 基础物理课程节选