“wellhole”的概念、定义、翻译、参考文献-科学参考

单词	wellhole
释义	wellhole [`wel´hōl] ^{MINING ENGINEERING} 1. A large-diameter vertical hole used in quarries and opencast pits for taking heavy explosive charges in blasting. 2. The sump, or portion of a shaft below the place where skips are caged at the bottom of the shaft, in which water collects.
随便看	microelectrophoresis microelement microemulsion flooding microencapsulation microencephaly microenvironment microerythrocyte microevolution microfacies microfarad microfibril microfiche microfilament microfilaria microfilm microfilm plotter microfiltration microfissure microfloppy disk microflora microfluid microfluoroscope microforge microform microfossil

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