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...
Hotkey categories and commands now appear in alphabetical order in the Hotkey Editor.在快捷键编辑器中快捷键分类与命令现在以字母顺序排列出现.Additionally, Category Locator simplifies organization of notes by multiple categories.另外, 类别定位器简化笔记的组织按多个类...
coral knoll珊瑚丘Knoll thinks for a moment and says, " Beg for mercy. "克诺想了一会后说: “ 乞求宽大. ”...on Nibley Knoll.在尼布利小山上sea knoll海丘...a grassy knoll.长满草的圆丘Silver had terrible hard work getting up the knoll.对于希尔弗来说,爬上那小山丘真不是件容易事...
“啊，我有时会感到绝望，”他假装悲伤地说。"Oh, I despair sometimes," he says in mock sorrow.戴维斯悲伤地问道：“我们难道就不能做点什么吗？”"Why don't we do something?" Davis asked plaintively.他们悲伤地环视眼前的情景.They sadly surveyed the scene before them....