Computer, language, text, formula are all tools, not the natures.
电脑、语言、文字、公式都是工具,而不是事物的本质。
Text introduced the principle of the regulator, deduced out estimation formula of the key data, presented the applied example.
介绍三端可调直流稳压器的扩流工作原理,关键参数的估算公式和应用实例。
This text is solid to 55 high strengths concrete cube strength to measure the data made the analysis, and gave to compute the formula.
对55组高强混凝土立方强度实测数据作了分析,并给出了计算公式。
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