bed shield

基本解釋

Because this coal bed thickness is moderate, selects the shield type hydraulic pressure support.
由于該煤層厚度適中，選用掩護式液壓支架。
The obtained conclusion in this paper can be used to the tunnels through river bed and those under shallow covering by shield.
相關結論可供水底隧道、地鐵區(qū)間隧道淺覆土進出洞盾構施工參考。
That night the keepers put the delinquents to bed in a separate area—a sort of protective custody to shield them from reprisals.
當晚，飼養(yǎng)員將這兩只搗蛋鬼安排在單獨的地方睡覺——這是一種保護性的監(jiān)禁，保護它們免遭報復。