1) undershield
['ʌndəʃi:ld]
下部保护物
2) under-protecting coal stratum
下保护层
1.
The effect of mining under-protecting coal stratum to the roadway in overburden stratum;
下保护层开采对上覆巷道稳定性的影响
2.
The deformation and change of permeability characteristics caused by the exploitation of the long-distance under-protecting coal stratum were analyzed and studied by the methods of numerical simulation and colliery on-the-spot test.
运用数值模拟和现场试验相结合的方法,对下保护层开采所引起远程覆岩的卸压变形及其渗透性变化进行了分析与研究。
3) downscale protection
下限保护
4) protection decentralization
保护下放
1.
Analysis of the protection decentralization in digital substation
数字化变电站中保护下放问题探讨
5) bottom guard
下部护罩
补充资料：下部
下部
解剖名。出汉·张仲景《金匮· 百合狐■阴阳毒病脉证并治》，特指前后二阴。
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