以二羧酸和异丁醇为原料,用硫酸作催化剂,合成二羧酸二异丁酯.The diisobutyl dicarboxylate was prepared by using acid and isobutanol as material and acid as catalyst.以冰醋酸、异丁醇为原料,硫酸高铈为催化剂合成乙酸异丁酯.A method for synthesis of isobutyl acetate based on ceric ...
Now what about that shopping list? I've got to get going.那张购物清单呢？我得出发了。The union presented a shopping list of demands to the management.工会向资方提交了一份写明各项要求的清单。I'm making a shopping - list, Tom.我在写一张购物单, 汤姆....
Firs, spruces and pines are conifers.冷杉 、 云杉和松树都是针叶树.Sarvas discusses the nature of the " lethal load " in conifers.萨维斯 讨论了针叶树的致死的基因性质.The xylem of ferns and conifers contains only tracheids.蕨类植物和针叶树的木质部仅含有管胞....
See to it that you are here punctually tomorrow.明天你务必要准时到这里.See to it that you're ready on time!请务必按时准备好!You must see to it that all the goods measure up to the specifications.你们得保证所有商品都符合规格....
When you are sitting, keep your elbow on the arm rest.坐立时，把胳膊肘靠在扶手上。There was not much elbow room in the cockpit of a Snipe.“沙锥鸟”战斗机的驾驶舱空间不太宽敞。He lay beside her awkwardly, propped on an elbow.他用一只胳膊肘支着身体，别扭地躺在她旁边。...
In is terminal pharynx laryngocarcinoma most a few years can you live?中晚期咽喉癌最多的能活几年?What does the symptom of laryngocarcinoma suffering from pharynx have?患咽喉癌的症状有哪些?Objective : To investigate the effects of recovery trai...
Mr. Sebastian was looking at the boys with a bemused expression.塞巴斯蒂安先生一脸茫然地看着男孩儿们。He was rather bemused by children...他为孩子们大伤脑筋。He was rather bemused by children.他为孩子们大伤脑筋。They all sat still, all bemused by the beauty o...
I, however, was fascinated by the vista over the sea.我却为此时此刻海上的景色所吸引住了.From my bedroom window I looked out on a crowded vista of hills and rooftops.我从卧室窗口望去，远处尽是连绵的山峦和屋顶。...a vista of future business that was blinding in...