朱砂(辰砂)
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中药材朱砂为()类矿物辰砂族辰砂的()。
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据报道,素有中国汞都之称的贵州汞矿,由于长年过度开采,造成汞资源枯竭,虽几经努力,最终还是无可奈何地走向破产。贵州汞矿由于长年开采造成汞资源枯竭的事实说明()
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朱砂来源于辰砂和人工合成品。
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The full title of the U.K. is the United Kingdom of ()and ()
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public and private colleges and universities and community colleges offer().
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()is used for calling and replying,and for transmitting acknowleding and relaying distress alerts.
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The way in which people address each other depends on their age, sex, social group and personal relationship. The English system of address forms frequently used includes first name, last name, title+last name, (), and kin term.
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气相色谱法测定烷基汞时,如果水样中含有机硫化物(硫醇、硫醚、噻吩),容易干扰烷基汞的测定。
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