墙上出现了裂缝，一扇门卡住打不开了。Cracks appeared in the wall and a door jammed shut.机器老是卡住，马达隔不了几分钟就突然熄火。Every few minutes the motor cut out as the machinery became jammed.土粘在犁铧上，卡住了犁。The soil sticks to the blade and blocks the plough....
This latest attack was at Careysburg, twenty miles north-east of the capital, Monrovia.最近的这次袭击发生在首都蒙罗维亚东北20英里处的凯里斯堡。Peter Murray is in London and has been monitoring reports out of Monrovia.彼得·默里一直在伦敦监听来自蒙罗维亚的新闻报道。Monrov...
Volatiles should not be added to the epoxies to improve their viscosity.不应将挥发物加到环氧树脂中去改善它们的粘性.The viscosity shows a rather pronounced variation with temperature.温度对粘度的影响十分明显.Viscosity overwhelms the smallest eddies and c...