Through the analysis on main factors that cause low qualification rate at the roof safety meters, corresponding counter measure has been made, resulting in obvious increase at qualification rate.

通过对顶板安全仪器仪表检测合格率低的要因分析，制定出相应的对策，使煤矿顶板安全仪器仪表检测合格率明显提高。

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As a practical example, calculation and analysis for the span 200 meters' cable-bridge in several load cases are done.

并以跨距为200米的索道桥为实例进行几种载荷作用下的静力分析计算。

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Through the analysis of the origin of the Chi System, the author has also obtained that the semi-diameter of the celestial sphere is about 13 meters.

通过对尺寸系统起源的分析，认为古人裸眼目视观测时的天球半径约为13米上下。

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Occasionally, you'll find you need to cancel out units, because, of course, you're always doing unit analysis as you solve your problems, and sometimes you'll need to convert joules to kilogram meters square per second squared.

偶然地，你会发现需要消除单位，因为在解题时,经常要做单位分析，所以有时候需要把,焦耳换做,一千克乘以米的平方除以秒的平方。

麻省理工公开课 - 化学原理课程节选

We divide that by the mass, so 0.12 kilograms, that's the mass of a regulation baseball for the major leagues, and the velocity of the baseball is 42 meters per second. So, we can cross out our units doing our unit analysis.

我们用质量来除它，质量为0，12千克，这是大多数联赛规定的棒球质量,棒球的速度为42米每秒,所以，我们可以消去单位,来做单位分析。

麻省理工公开课 - 化学原理课程节选

Very similar to the famous Mars rovers Spirit and Opportunity, the six-wheeled bot created by a team at Shanghai Aerospace System Engineering Institute is capable of cruising around the Moon at a reported 100 meters per hour, all the while snapping photos and collecting bits of moon rock for analysis and possible sale on eBay.

ENGADGET: Chinese engineers reveal nuclear-powered lunar rover