基本解释柱硼鎂石同根派生 pinnoite相关词英汉例句According to the characteristics of pinnoite in Dachaidan, a new technology of preparing boric acid with two-step sulfuric acid method was studied.摘要針對大柴旦柱硼鎂石鑛特點，對酸法制硼酸進行了工藝優化研究。pinnoite更多例句