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observation hole
meaning in English
观察孔
Examples
Water leakage treatment of 2616 hydro
observation hole
古汉山矿2616号水文观测孔漏水治理
Determining valid vertical space in
observation hole
of dike - dam
大坝观测孔有效铅垂空间的确定
Related Words
orbit observation
ground observation
meridian observation
runway observation
project observation
direction observation
observation place
participant observation
observation instrument
systematic observation
observation helicopter
observation hip syndrome
observation in groups
observation index
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