他把手伸进身边的纸板盒里。He reached into the cardboard box beside him.他们的纸板盒用蜡线扎得整整齐齐.Their cardboard boxes were wrapped and tied neatly with waxed twine.我们要求用双层的纸板盒送达时却是单层的纸板盒.We asked for a double carton, but it came in a single...
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...