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 )....
Cirrate: Having or resembling a cirrus or cirri.有卷须的: 有卷须的或象卷须的.For example, they are standard equipment on the Cirrus series of single engine aircraft.例如, 他们的标准设备的Cirrus系列单引擎飞机.Cirrus sac located between intestinal fork...
The boat flipped and hurled its passengers into the maelstrom.这时,小船翻转过来,把上面的乘客都甩进了大漩涡之中....the maelstrom of ethnic hatreds and vendetta politics...种族仇恨与政治宿怨造成的大动乱Inside, she was a maelstrom of churning emotions.她心中的情感似波涛...
Other options include xenon headlamps, a removable hardtop and GPS navigation.其他配选配置还包含了疝气大灯 、 可硬顶篷和GPS导航系统....a GPS receiver.全球定位系统接收器Can you use a GPS or something to track her down?你能用全球定位系统什么的追踪到她 吗 ?This disengages ...
他红润的脸庞仍旧时常笑得堆起褶子。His ruddy face still routinely creases with mirth.他堆起许多木头.He piled a lot of logs.在一侧，民兵们正在堆起木柴，准备生起篝火。Off to one side, the militia was heaping up wood for a bonfire....