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词汇 pinnoite
释义 pin·no·ite 英'pɪnəwaɪt美'pɪnəwaɪt
基本例句
柱硼镁石¹⁰⁰
According to the characteristics ofpinnoitein Dachaidan, a new technology of preparing boric acid with two-step sulfuric acid method was studied.摘要针对大柴旦柱硼镁石矿特点,对酸法制硼酸进行了工艺优化研究。
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