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目的：探讨煤矿井下矿工骨代谢变化。
Objective: To study the changes of bone metabolism in the underground coal miners.
youdao
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由此建立了骨矿含量随小儿年龄和身高、体重变化的直线方程。
Linear equation of BMC with age, height, and weight were erected.
youdao
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由此建立了骨矿含量随小儿年龄和身高、体重变化的直线方程。
Linear equation of BMC with age, height, and weight were erected.
youdao