The dichroic agent is polymetric iodine formed by impregnating an initially transparent plastic sheet of polyvinyl alcohol with iodine and heating . 其二向色剂是聚合磺,它是将透明的聚己烯醇塑料薄片在磺内浸渍后加热制成的。
Even in carbon disulphide in very dilute solution, the alcoholic spectrum shows some changes in the oh frequency due to solvent association . 即使在很稀的二硫化碳溶液中,醇类光谱还表现出由于与溶剂缔合而产生的OH频率的一些改变。
The process provides a facile way of producing hydrocarbl perchlorate from alkenes, cycloalkenes, aralkenes, alkanols, cycloakanols and aralkanols . 本文介绍了从链烯、环烯、芳链烯、链烷醇、环烷醇、芳烷醇来制备过氯酸烃基酯的方便方法。
In addition, several amino acids, sterols, phospholipids, and a few other biochemicals of general occurrence have been shown to influence feeding behavior . 此外还有一些氨基酸、固醇、磷脂以及少数普遍存在的生化物质,也都能影响取食行为。
The process provides a facile way of producing hydrocarbyl perchlorates, from alkenes, cycloalkenes, aralkenes, alkanols, cycloalknols and aralkanols . 本工艺程序提供了从链烯、环烯、芳链烯、链烷醇、环烷醇、芳烷醇来制备过氯酸烃基酯的方便方法。