手把给进岩心钻机 lever feed core drill
侵进岩浆 [地质] aggressive magma
逆循环钻进岩心管 reverse-circulation core barrel
硬岩掘进机 TBM ; hard rock TBM
全断面岩石掘进机 TBM ; Tunnel boring machine
岩巷掘进 deading ; deadwork ; Rock Drivage ; stone drifting
岩心钻进 core drilling ; ring drilling ; coring
前进成岩酌 anadiagenesis
全断面硬岩掘进机 TBM
岩心钻进进尺 cored footage
我们通过一架望远镜观察了停留在岩架上的一只海鹦：它在张望，思索，忽进忽退。
Through a telescope we watched the unfolding drama of a puffin on a ledge, peering over the edge, thinking better of it, retreating, advancing, retreating.
总结了岩巷掘进推广应用“三小”的情况和在提高单进、降低掘进成本等方面取得的经济效益，提出了存在问题和建议。
The paper outlines the situation that Sanxiao experience is popularized for rock drift excavating also its economic efficiency in aspect of promoting driving rate of advance and decreasing cost.
长广煤田上二迭统龙潭含煤岩系是由海退系列和海进系列组成的一个完整沉积旋回。
The Upper Permian System Longtan coal measure in the Changguang coal deposit is a complete sedimentary cycle, consisting of a regressive and a transgressive series.
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