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 ).N - hydroxyethylpyrrolidone ( NHP ) was synthesized from � � - butyrolactone and ethanolamine on Y molecular sieve catalyst by two steps....
There are far subtler ways that sight bewitches and beguiles.运用视觉引诱蛊惑人有很多技巧.Whenever the Enchantress is attacked, she beguiles the unit into slowing its attack.当魅惑魔女受到攻击时, 她会迷惑该单位以降低其攻击速度.Her and her smiles , Her wit, he...