报道以呋喃甲醛和苯乙酮为原料,氢氧化钠为催化剂,采用超声波辐射合成糠叉乙酰苯的方法.With furfural and acetophenone as raw materials - furfurylideneacetophenone was synthesized by NaOH as catalyst under ultrasonic irradiation....
They set about disbanding the terrorist groups.他们开始解散恐怖主义组织。The girl attendant has set about cleaning the room.那位女服务员已开始打扫房间.We set about our task at once with great enthusiasm.我们立刻兴致勃勃地干起来....
他双袖上卷, 前臂显出隆起的肌肉.His forearms, where the sleeves were rolled back, showed bulging muscles.他前臂上刺有花纹.He had a tattoo on his forearm.她一边说一边注视着他换挡时前臂弯曲的样子.As she spoke, she watched the muscles in his forearm flex when he shi...
Times got the Firefly Girl in the Style section.《时代》把有关萤火女孩的事放在了时尚专栏.A firefly is a type of beetle.萤火虫是一种甲虫.A group of Firefly Girls were here last month.上个月,一队萤火虫女童军来过这里.The firefly wakens: waken thou with me.醒着的只有萤火,还有...
Flu virus can live on shared objects ( doorknobs, keyboards, counters, etc ).病毒可以在共用物品表面生存 ( 门把手 、 键盘 、 柜台等 ).Counters can, of course, be made highly directional by the use of external collimation.当然可以利用外部准直法来提高计数器的方向性.H...