Sodium metaborate is a by - product from deoxidation of sodium borohydride.摘要偏硼酸钠是硼氢化钠的还原 副产物.It is resistant to borohydride reduction in alcoholic solvents.在醇溶剂中,它不能被硼氢化物还原.The hydrogenation of terpineol to dihydroterpi...
On South Main Street, a huge brick building looms into view.在南大街上，一座巨大的砖砌建筑赫然出现在人们的视线中。A first-class worker, she operated the difficult Jacquard looms.她技艺高超，操作着复杂的提花织布机。All were busily engaged, men at their ploughs , wom...