本文以浅显的方式解释摩尔圆的基本概念和作图方法，附带做些练习和解答。
The basic conceptions and construct methods of Mohr circle were introduced simply and popularily in this paper with some exercises and their explanations.
摩尔圆图解法不仅可以按三个以上方向的应力（变）测量结果绘出主应力（变）方位、大小，以及应力（变）值随方位的变化；
The azimuth and intensity of main stress, and stress-values varying with azimuth can be described according to the measuring results of stress in three directions by Mohr's circle graphic method.
在250毫升。三口，圆底烧瓶用机械搅拌器提供放置二十一点二克。（0.2摩尔）苯甲醛，和18.6克（0.2摩尔）苯胺的加入快速搅拌。
In a 250-cc. three-necked, round-bottomed flask provided with a mechanical stirrer is placed 21.2g. (0.2 mole) of benzaldehyde , and 18.6 g. (0.2 mole) of aniline is added with rapid stirring.
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