coal face undercutting
采煤工作面截槽
He has a disconcerting knack of undercutting his own arguments.
他雕琢自己论点的才能令人张口结舌。
By repeatedly undercutting his prices, his competitors soon had him on the ropes.
不停降价，他很快被竞争对手逼入绝境了。
Note the undercutting of the lamina with bilateral decompression of the thecal sac.
同一患者经皮减压后，注意硬脊膜双侧减压的椎板切除。
Nature made this den, a cave undercutting bluff of beautiful orangebeige sandstone.
这是个浑然天成的洞穴。山洞在一个浅桔色的砂岩峭壁之下。
Following this rule, we will ensure that over cutting or undercutting will not occur.
这样就保证不会发生过切或切削不足现象。
Research on Undercutting in Cycloid Ball Planetary Transmission Based on Space Meshing Theory
基于空间啮合理论的摆线钢球行星传动根切研究
Final polishing of the commutator shall use a180 grit abrasive and shall be done after the undercutting process.
换向器最后得抛光应在下刻以后并使用180目研磨剂。
Methods 25 cases with simple lumbar vertebral canal stenosis were treated by enlarge undercutting laminae laminae.
方法采用潜式扩大开窗术治疗单纯性腰椎管狭窄症25例。
Star Maling Glass Flake Epoxy penetrates through rust to steel substrate and stops further corrosion and undercutting.
本产品可渗透到钢材基层，防止锈蚀的进一步蔓延。
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