He took that as an auspice of happiness.他把那看作是幸福的征兆.It is the symbol of dignitary , reverence, and auspice.是权贵, 尊严和吉祥的象征.He took her gentle words as an auspice of happiness.他把她话当作是幸福的吉兆....
商业上采用的以镍作催化剂的氢化有两种.Commercially two main types of hydrogenations are carried out with Nickel catalyst.抑制剂和促进剂能影响氢化速率.Inhibitors and promoters may affect the rate of oxxidution.用六氢化邻苯二酸酐加入到邻苯二酸酐中,可使其放热反应减慢.Exothermic reac...