The first catalytic converters were called conventional oxidation catalysts.最初的转化器叫做常规氧化催化器.Many processes that are essential to the chemical industry use heterogeneous catalysts.很多重要的化学工业过程就是使用多相催化剂的.Catalysts that lowe...
The first catalytic converters were called conventional oxidation catalysts.最初的转化器叫做常规氧化催化器.Many processes that are essential to the chemical industry use heterogeneous catalysts.很多重要的化学工业过程就是使用多相催化剂的.The producing techn...
I've got airsickness.我晕机了。I ~ m not feeling well. Do you have some tablet for airsickness?我觉得不舒服. 有治晕机的药 吗 ?Have you ever suffered from airsickness before? You're probably airsick.您曾经晕过飞机 吗 ?您可能是晕机....
His voice was harsh as he enunciated each word carefully.他一字一顿，听上去很生硬。The light's a bit too harsh. You can turn it off.灯光有点太刺眼了。你可以把灯关掉。The fabric is strong enough to withstand harsh processing.这种织物非常结实，能经受粗加工。...