用糠醇和糠醛缩聚制备了新型呋喃树脂.A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.糠醛树脂化结焦是导致催化剂失活的主要原因.Resinification of furfural on the catalyst was the main cause of deactivation.图5醋酸苯胺比色法,糠醛...
Meyers is a diligent and prolific worker...迈耶斯是个勤奋多产的工人。But when detective Meyers saw the black rock and felt its weight, he started laughing.但当Meyers侦探看到那块石头并且感觉到它的重量后, 他笑了.Old Meyers liked him and gave him tips.老迈耶斯喜欢他...
Thousands of firms could go out of business.成千上万个企业可能破产。Some of old newspapers had to go out of business for low sales.有些老的报社由于销量低而倒闭了.The company has made gigantic losses this year, and will probably go out of business....
The Pomeranian is cocky, commanding , and animated as he gaits.博美的步态骄傲 、 庄重而且活泼.Join Alvin . Simon and Theodore in this all - new, screamingly funny animated feature!艾云、西蒙、辉度一起参与一套全新, 惊险而又有趣的卡通电影!Disney has returned to w...
We tend to meet up for lunch once a week.我们往往每周共进一次午餐。Older mothers tend to be too idealistic about the pleasures of motherhood.较年长的母亲往往对身为人母的乐趣过于理想化。I tend to stick to fresh fruit for pudding.我一直坚持用新鲜水果做甜点。...
long borer auger长钻Main equipments such as: large - scale vertical lathe, borer, butterfly valve testboard etc.主要设备有: 大型立车?镗床?蝶阀测试台等.This poison helps the plants resist insects, especially the maize borer.这种毒药有助于植物防虫, 特别是...