On the y axis here it's the percent of people with these two conditions who have cardiovascular disease--or stroke rather 5%--less than 5% and a little over 5% with the stroke as the outcome.

轴表示患有心血管疾病的人同时患有,或不患有代谢综合征的百分比,就中风来说,分别是小于5%和略大于5%

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And the convention is that when two atoms bond, they bond along the z-axis.

我们的惯例是，两个轨道成键，键轴为Z轴。

麻省理工公开课 - 固态化学导论课程节选

That's a choice, and that choice turns out to be very interesting and really important, because if you connect these two points together, you get a straight line that has to intercept the x-axis at some point.

在这一选择下,我们会发现一件非常有趣，而且极其重要的事,当你把这两点用直线连接起来，你会发现这条直线,将与x轴在某点相交。

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We have two of them on the z-axis like this.

他们俩的z轴都这样。

麻省理工公开课 - 固态化学导论课程节选