玫瑰很适于接枝在石南根上.Roses graft well on brier roots.化学改性主要有氧化 、 交联 、 酯化和接枝共聚.Chemical modification including oxygenation, esterify, graft copolymerization and so on.以过氧化二苯甲酰为引发剂,使 丙烯 睛在涤沦(PET ) 纤维上接枝共聚.PET fibres were grafted a...
He can tell a fake from the original.他能分辨出赝品和真品。...a plot to dupe stamp collectors into buying fake rarities...诱骗集邮者购买珍稀邮票赝品的阴谋We thought it was a genuine antique, but it turned out to be a fake.我们以为这是真古董, 结果只是一件赝品。That ...
We searched until we knew it would be pointless to continue.我们搜索又搜索，直到觉得继续下去也枉然时才罢手。Who wouldn't have preferred this with life so pointless, bitter and hopeless?谁不喜欢这样呢,生活既是那么无聊, 痛苦,无望!It is pointless to have a car ...
氧化铈较氧化镧更容易与钒反应,因而具有更强的抗钒能力.Cerium showed more effective than lanthanum for vanadium tolerance of FCC catalysts.结果表明,稀土氧化镧掺杂钼合金由于其细小的氧化镧颗粒和细小的晶粒的作用而具有较高的屈服强度.The rare earth lanthanum oxide doped molybdenum alloys containi...