N - hydroxyethylpyrrolidone ( NHP ) was synthesized from � � - butyrolactone and ethanolamine on Y molecular sieve catalyst by two steps.以改性Y分子筛为催化剂,γ-丁内酯和乙醇胺为原料,采用γ - 丁内酯法两步合成N - 羟乙基吡咯烷酮 ( NHP ).Surface active propertie...
The most abundant phospholipid in many cells is phosphatidyl ethanolamine or cephalin.在许多细胞中,含量最高的磷脂是磷脂酰乙醇胺或脑磷脂.OBJECTIVE To study and improve the synthesis of liposome excipient phosphatidyl ethanolamine.目的研究并改进脂质体辅料磷脂酰...
A few words successfully bring out the greediness of the usurer.寥寥数笔,就把这高利贷者贪婪的嘴脸勾画出来了.The usurer squeezed the poor people.高利贷者压榨穷人.Shylock, the Jew, lived at Venice: he was an usurer.犹太人夏洛克住在威尼斯,他是个放印子钱的人.Shylock is a u...
The fay lived in groups called the faerie, between the heavenly and earthly realms.fay合群而居就称为faerie,它们生活在天国和人世之间.Then things don't fay with her any more than with us.这么说,她的生活也不是事事顺心,也并不比我们强呀.Fay was so impressive on...
a charge of felony对犯重罪的指控Every defendant charged with a felony has a right to be charged by the Grand Jury.重罪被告都有权由大陪审团审理.A person found guilty of a felony and confined in a prison.被判有重罪并羁于狱中的人....
受毒害叶片经常出现针状的叶尖从蜷缩部分脱落下来.Abscission of the tightly rolled , needlelike tips of the injured leaves quite often occurred.分析了空气量和锌浓度对形成四针状的氧化锌晶须的影响.The effect of air quantity and zinc concentration on forming T - ZnO _ w whi...
The cock has crowed for the third time.鸡唱三遍.'I'm not sure I've ever driven a better lap,' crowed a delighted Irvine.“我想这也许是我开得最棒的一圈，”欧文高兴地欢呼道。The cock clapped his wings and crowed.公鸡振翅啼叫."I'm not...