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单词
coal coring tool, coal corer
释义
coal coring tool, coal corer
煤心采取器; 又称“取煤器”、“取煤管”。煤田钻探钻进过程中,专门用于采取煤心的一种特殊器具。
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更新时间:2026/9/15 8:55:53