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...
The Clean Water Act expressly provides that it does not preempt more stringent state law.《洁净水法案》明确规定,该法并不先占更为严格的州法律.They do not preempt the land surface that is useful for other purposes.它们不预先占用对其它目的有用的地面.I advised him a...
The police stenographer recorded the man's confession word by word.警察局速记员逐字记下了那个人的供词.The court stenographer registered the trial proceedings.法庭速记员记录下了审判进程.The stenographer may be either a hotel employee or an employ...