Two ways of research are usually employed on the social power sources in the academic history: judgement of values and that of facts, each with its own reasons.
学术史上对社会权力来源的研究基本上通过两条路径展开:即价值判断的路径和事实判断的路径。
Combustion and slagging property judgement of the coal is essence for boiler design in the power plant.
判断煤质燃烧、燃烬和潜在结渣特性是燃煤电厂锅炉的设计基础。
The judgement and selection of conductors' section is an important aspect of power transmission line design.
导线截面的论证选型是电力线路设计的重要内容。
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