提出了一种干柱层析法 分离提纯 试剂对氨基偶氮苯的新方法.A new method for separating and purifying p - AAB ( p - aminoazobenzene ) by dry - column chromatography is developed.偶氮苯侧链液晶聚合物.Azobenzene side - chain liquid crystalline.必须通过偶氮,(苯)酚类,有机氯试剂,...
We got up at sunrise .我们在日出时起床。The sunset rivalled the sunrise in beauty.日落与日出的景色一样美.By sunrise tomorrow we'll be on our way.明天天亮前我们就将赶路。The name Easter comes from Eostre － a goddess of spring - time and sunrise.复活节...
Gifts from enemies are dangerous.敌人礼，藏危险。Clerk : Well , Canadian Gifts is on the lower level. It's across from Prime Time Video Rentals.噢, 礼品店在楼下, 在黄金时刻录像出租屋的对面.There are wide assortments of gifts to choose from.那儿有...
Objective To improve the diagnosis and the treatment of filariasis.目的为提高丝虫病的诊断和治疗水平.A decline trend of the transmission of malayan filariasis, therefore, has been exhibited.在达到基本消灭丝虫病地区, 马来丝虫病传播流行呈下降态势, 防治措施可以?Dengue, fi...