The production methods of N, N - dimethylaniline including liquid - phase and gas - phase method are introduced.介绍了N, N- 二甲基苯胺的两种生产方法 —— 液相法和气相法,综述了N, N-二甲基苯胺国内外生产工艺进展.A HPLC method with electrochemical detector for dete...
Stone Age settlers fashioned necklaces from sheep's teeth.石器时代的移居者用羊的牙做成项链。...necklaces, bracelets, and pins.项链、手镯和胸针On display are earrings, necklaces and bracelets made from jade, amber and amethyst.展出的有用玉石 、 琥珀和紫...
The bigger girls used to chase me and tickle me.比我高大的女孩过去总是追赶着胳肢我。Philosophy's queerest arguments tickle agreeably our sense of subtlety and ingenuity.哲学上最奇怪的议点也会愉快地引起我们微妙机敏的感觉.If something's bothering you, get...
Belgium sent its troops to Congo, stating that the aim was to protect and evacuate Europeans.比利时派军队进入刚果, 声称其目的是保护及撤走欧洲人.There are also characteristic amyloid deposits that stain with Congo red.同时有特征性刚果红染色的淀粉样沉着物.All the ...
People don'tlike to ask questions for fear of appearing ignorant.人们不喜欢问问题，害怕自己会显得很无知。They did not want to give evidence for fear of reprisals.他们因为害怕报复而不想作证。For fear of disturbing others she spoke with bated breath.因...
Objective : To study the causes of misdiagnosis and high - risk factors of gallbladder carcinoma.目的探讨原发性胆囊癌的误诊原因及高危因素,加强对本病的早期诊断和防治.Therefore, the liver and gallbladder cannot be completely separated physiologically and ...