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 several conjectures.存在着几种猜测。I was right in my conjectures.我所猜测的都应验了.Let us not make random conjectures about the greatest matters.关于那些最伟大的事物,我们不要随意猜测....
Water oozed from the leaky pipe.水从漏的管子中渗出来.Mud oozed from underground.泥浆从地下冒出来.Spittle oozed down his jaw.唾液顺着他的下巴流下来。Blood oozed out of the wound.血从伤口慢慢流出来。...
她饥饿地盯着烤肉看.She looked at the roast hungrily.莫拉和萨拉饥饿地看着疣猪逃跑了.Mora and Zara watch hungrily as the warthog makes its getaway.总司令是疯狂的无法饥饿地到达.Commander - in - chief was mad cannot arrive hungrily....