催化剂是一种能加速化学反应的物质.A catalyst is a substance which speeds up a chemical reaction.各种陶土管用作转化催化剂的载体.Various ceramic materials have been suggested as supports for reforming catalyst.经过泡水试验,催化剂应不开裂或破碎.To pass the water test the...
Investigations had revealed extensive rot in the beams under the ground floor.调查发现一层地下的横梁大面积腐烂。He bumped his head on the low beams.他的头碰到了低梁上。The beams are riddled with woodworm.这些木梁被蛀虫蛀得都是洞。...
木炭画很容易弄脏.Charcoal drawings smudge easily.他把纸翻过来,用一块木炭画上了标记.He turned the paper over and traced the impression with charcoal.你最好近在练什么 ( 画 )? -练木炭画.What ( branch of art ) have you been practising? _ Drawing in charcoal....
Legal Aid can often provide referral to other types of agencies.法律援助机构通常可以帮助引荐到其他类型的机构去。Relief agencies are stepping up efforts to provide food, shelter and agricultural equipment.救济机构正加大力度提供食物、住所和农用器械。All agencies that ...
Studies on the Methods : To Control Florescence of Camellia.农药对 枇杷 园生态系的影响与主要害虫生态控制研究.She is currently doing a business studies course at Leeds.她目前在利兹大学修读一门商科课程。Stern also studies and observes the behaviour of babies...斯...