The content of ephedrine hydrochloride was determined by HPLC.采用高效液相色谱方法测定盐酸麻黄碱的含量.Departments of public health must enhance control over prescribed ephedrine preparations.卫生部门要加强对麻黄素单方制剂的管理.No other units or individuals...
When the days shorten in winter some people suffer depression.冬季天短，有些人会变得抑郁消沉。Injury problems could shorten his career.受伤的问题有可能缩短他的职业生涯。Minor accidents can shorten the life of a car.小事故会缩短汽车寿命....
He is the pink of politeness.他是礼貌待人的典范。She had that inbred politeness, it was a part of her.她拥有那种天生的优雅，举手投足都彬彬有礼。For the first time her veneer of politeness began to crack.她温文尔雅的外表第一次露出破绽。His veneer of politeness conceal...
The sediments are detrital and largely of greywacke facies.沉积岩为碎屑质,大部分属于杂质砂岩相.Glauconite, detrital carbonate skeletal debris, marine fossils, and collophane are commonly present.海绿石 、 碳酸盐骨骸碎屑 、 海相化石和胶磷矿普遍出现.The sediments...
After some treatment of centripetal force , he deduces Kepler's third law.在向心力的一些论述之后，他推出了开普勒的第三定律。We share his view that business can be a positive force for change...我们同意他的观点，认为商业可以是促进变革的一种积极力量。The use of Ozawa�...