The hydrogenation can be controlled to produce any degree of hardness desired in the product.为了生产所需要的任何硬度的产品,可对氢作用加以控制.Its hydrogenation activity in aromatics saturation and ring opening activity were investigated.芳烃加氢饱和...
The bead is put on the forehead of the dead shepherd ahead of the herd.珠子被戴在畜群前面的死牧羊人的前额上。She accidentally swallowed a glass bead.她不小心吞下了一颗玻璃珠.Glass bead gels need not be hydrated prior to use.玻璃珠凝胶在使用之前不需要水化....a multic...
Their luck had simply run out. Still, never fear.他们的好运已经到头了。不过，别担心。We'll have a long talk and a good cry and then with any luck we'll both feel better.我们会一席长谈，大哭一场，但愿这样我们两个都会好过一点。'Goodbye, then, and thank...
他们加固河堤让村子免受洪水之灾.By strengthening the embankments they secured the village from floods.这孩子老给父母招灾惹祸.This child is always making trouble for his parents.它被称为thePan-CaribbeanDisasterPreparednessandPreventionProject（泛加勒比备灾防灾项...