Through nitrosation , hydrogenate reducion, and acylate three steps, the yield surpass 80 % for the diethyl malonate.收率相对于丙二酸二乙酯达到了80%以上.The necessary material of 2 - ( 2 - methoethyl ) acetaldehyde diethyl acetal was sy...
候车室的公告牌要求人们不要吸烟和随地吐痰。Notices in the waiting room requested that you neither smoke nor spit.随地吐痰招致疾病的传播.Spitting in the street leads to the communication of disease.吐痰是不好的行为.It's bad to spit....
硬币上铸有浮雕的文字和人像.The coins areembossed with letters and figures.子弹孔部分的样式设置很简单, 我们在这里用了浮雕的效果.For the bullet hole part it's really simple, we use an Emboss with these settings.灰色模拟浮雕画法一种用浓淡不同的灰色作画的单色画法, 尤指模拟浮雕的画法.A style...
Paco y amigos . Ana y Li Xin son amigos.巴科和贝贝是朋友. 安娜和李欣是朋友.What's up with Pasadena, Pomona, Santa Ana and all that?帕萨迪纳市, 波莫纳, 圣安娜和其他地方 怎么样 ?Based on thermodynamics principle, the feasibility for melting iron boring...
An unattended bag was spotted near the platform at Gatwick...在盖特威克机场站的站台附近发现了一个无主袋子。Flying out on Friday from Gatwick it took seven hours door-to-door.星期五从盖特威克起飞全程需要 7 个小时。The package includes midweek flights from Gatwic...