“heading-overhand bench method”的概念、定义、翻译、参考文献-科学参考

单词	heading-overhand bench method
释义	heading-overhand bench method [¦hed·iŋ `ō·vǝr´hand `bench ´meth·ǝd] ^{MINING ENGINEERING} A tunneling method in which the heading is the lower part of the section and is driven at least a round or two in advance of the upper part (bench), which is taken out by overhand excavating. Also known as inverted heading and bench method.
随便看	river mining river morphology river piracy river plain River Po river radar river run gravel river system river terrace river tide riverwash river water Rivest-Shamir-Adleman algorithm rivet riveting riveting hammer riveting stake rivet pitch rivet weld riving rivulet rivulose RJE RK galaxy R magnitude

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