mining compass

基本解释矿用罗盘

网络释义

1)mining compass,矿用罗盘2)dial ,mining, surveyors',矿用测量罗盘3)dipping compass,矿山罗盘4)dipping compass,矿用罗盘;倾角仪;磁倾针5)mariner's compass,船用罗盘6)standby compass,备用罗盘

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