这就是所谓的催化裂化.It is known as catalytic cracking.裂化是使较重的低挥发性的碳氢化合物分裂成较小分子的化学分裂.Cracking involves the chemical breakdown of higher, less volatile hydrocarbons into smaller molecules.FCC(流化催化裂化 ) 是炼厂生产汽油的主要方法之一.The Fluid Catal...
She's got into Durham to read law.她考上达勒姆大学学法律.Why don't you come to stay with us next time you visit Durham?下次来达勒姆就住在我们这儿好 吗 ?Durham has much to offer the camera-toting visitor.达勒姆景点众多，对携带相机的游客来说大有可拍。...Humphre...
be censorious of petty failings对细微的不足非常挑剔a censorious or denunciatory nature挑剔或谴责性质His treatment of him is sympathetic rather than readily censorious.他对他的态度是同情而并非一味批评.Despite strong principles he was never censorious.虽然他...
DB: I could stop the car, pull hand brake.分贝: 我可以停止汽车, 拉手煞车.A DB - 624 quartz capillary column and a FID were used.采用气相色谱法, DB -624石英毛细管柱,氢火焰离子化检测器(FID),程序升温,检测器温度为300℃.B & W products have achieved CE 、 UL 、 DB 、 ROSH an...
A few horse-drawn carts still trundle through the dilapidated mining villages.几架马车仍然在破落的矿村中曲折行进。The house is very dilapidated but it has possibilities.这房子已破旧不堪,但还可有利用的价值.The building wore a dilapidated look.这建筑看起来要倒塌了....