There can be important consequences of activation or deactivation.在这里可能有活化或钝化的重要结果.This process is endothermic with rapid carbon deposition and deactivation of the catalyst.此过程是吸热的,同时很快发生碳积沉并使催化剂活性减低.The methods of regen...
the ebb and flow of the tide海潮的涨落Private and public virtues were at the lowest ebb.公德与私德均在衰落之中.The flood and ebb tides alternates with each other.涨潮和落潮交替更迭....