该队还因其良好的体育精神及公平竞争精神而受到了表扬。The team also won praise for sportsmanship and fair play.对于有些人来说，赛跑的全部意义就是竞争。For some people, competing is the be-all and end-all of their running.他们现在想要公平竞争。They are now trying to compete on an...
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...