There were wall-to-wall people, all invited guests and celebrities.到处都是人，全是邀请来的贵客名流。Valentino is keen to see celebrities parading his clothes at big occasions.瓦伦蒂诺喜欢看名人在重大场合展示他设计的服装。They were entertained by top singers, ...
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...