1. This article uses mechanics of elasticity theory to analyse the stress of fragile material disk pressed in diametric. From it we can obtain the formula of stress calculating theory. 本文用弹性力学理论对沿直径受压的脆性材料圆盘进行应力分析，得出应力计算理论公式。
2. Coal quality characters of four kinds of lignite are analyzed, and the law of technologic parameters for lignite gasification in different diametric pressure fixed-bed gasifiers is summarized. 分析了煤层厚度变化和支护方式对煤质的影响，在此基础上提出了若干减少出矸以提高掘进工作面出煤质量的措施。
3. And development of China represents that of a constructive force at no denial of anyone's fundamental interests, which constitutes another diametric difference with the other powers in history. 这种利益关系的变化是当代中国与历史上大国发展环境的最大区别。
英英解释
adj.
1. related to or along a diameter
2. characterized by opposite extremes; completely opposed
