Er-Min Du 杜二敏
Er-Min Yao 姚二民
Er-Min Guo 郭二敏
Er-Min Wang 王二敏
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Method By using high sensitive negative voltage exhaled thoron progeny collection and measurement system,the thorium lung burdens of each dust exposed miner was obtained.
方法用高灵敏度负高压人呼出气中钍射气子体收集测量系统对每名被检矿工测定其肺内钍的沉积量。
参考来源 - 吸入钍尘对矿工肝功能影响是否存在阈值的研究Investors who is engaged in exploiting in the mining industry and persons who control actually are generally local those who actually have strength and hold power and outside investor, the miner generally recruits from the hinterland directly.
从事矿业开采的投资者和实际控制者一般是地方实力派和外来投资者，矿工一般从内地直接招募。
参考来源 - 民国时期青藏高原经济地理研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N-COUNT A miner is a person who works underground in mines in order to obtain minerals such as coal, diamonds, or gold. 矿工
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