“placic horizon”的概念、定义、翻译、参考文献-科学参考

单词	placic horizon
释义	placic horizon [`plā·sik hǝ`rīz·ǝn] ^GEOLOGY A black to dark red soil horizon that is usually cemented with iron and is not very permeable.
随便看	Welge method well wellbore wellbore hydraulics well completion well conditioning well core well-deck vessel well drill well-formed formula wellhead wellhole well injectivity well logging well-ordered set well-ordering principle well performance wellpoint wellpoint system well-posed problem well-regulated system well shooting well-sorted well spacing well stimulation

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