Optionally, the purified diisobutylene may be hydrogenated to isooctane hydrogenation catalyst.任选的是, 可用加氢催化剂将纯化的二聚异丁烯加氢生成异辛烷.The process comprises first oligomerizing isobutylene to diisobutylene using a sulfonic acid ty...
They are located in tissues ( the apical meristems ) at the growing points of roots and stems.它们位于根和茎的生长点组织 ( 顶端分生组织 ) 中.The outer layer of apical meristem, from which the epidermis is formed.表皮''.'原'...
He described the difficulties of surviving for four months as a captive.他描述了被俘4个月里挣扎求生的艰难岁月。Children come to zoos precisely to see captive animals.孩子们到动物园就是为了看圈养的动物。Airlines consider business travellers a captive market....
俱乐部已经把会议日期改到1月22号，星期六。The club has moved its meeting to Saturday, January 22nd.他轻松战胜了星期六击败厄尼·埃尔斯的加西亚。He easily overcame Garcia, Saturday's conqueror of Ernie Els.这件事我总是放在星期六晚上睡觉前做。I always do it last thing on a Satu...
The patient complained of inappetence.病人诉说他食欲不振.The patient complained of inappetence and nausea.病人诉说他食欲不振和呕吐.Hps also causes individual cases of arthritis acute pain, fever and inappetence.个别情况下猪副嗜血杆菌也会引起关节炎,导致瘸腿并伴有剧痛 、...
The take-off was aborted.起飞取消了。The rocket flight had to be aborted because of difficulties with computer.因电脑出故障,这次火箭飞行只好中辍.They aborted the space flight finally.他们最后中止了这次宇航飞行....