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单词
microseismic instrument
释义
microseismic instrument
microseismic instrument
[
¦mī·krə¦sīz·mik ′in·strə·mənt
]
(mining engineering)
An instrument for the study of roof strata and supports; it is inserted in holes, drilled at selected points, for listening to subaudible vibrations that precede rock failure.
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更新时间:2024/12/22 18:31:52