本文用对比形式扼要地阐述了第三角投影法的基本原理、特点和看图方法。
With respect to the third angle projection, this paper sets forth briefly its rationale, characteristics, and chart reading, in the form of comparison.
本研究以不同训练方法的对比形式，对运动员的基础水平、素质能力以及核心力量系统训练后反应条件，做出了具体的测试和评价。
By comparison between different training methods, this research made concrete test and evaluation on the athletes 'basic level, quality, aptitude, and the response condition.
目前，一个研究小组打算通过对比月球和地球岩石中氯的两种同位素，或两种形式的氯来解决这个疑团。
Now, a team has attempted to solve the mystery by comparing the ratio of two isotopes, or forms, of chlorine in lunar and terrestrial rocks.
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