您要查找的是不是：
- tetrahydroxy butane 赤藓糖醇
- This is not a right angle, butan acute one. 这不是直角，而是锐角。
- Its main components include propane, butane and butylene. 主要成份是丙烷、丁烷、丁烯等。
- Butane is converted to butadiene for synthetic rubber. 丁烷则转换成丁二烯，用来制造人造橡胶。
- Its main components include propane, butane and butylene . 主要成份是丙烷、丁烷、丁烯等。
- The main component in 4# solvent is liquefied butane. 四号溶剂主要成分为液化丁烷。
- Buying a new butane soldering torch was a challenge. 购买一台新丁烷焊炬是一个挑战。
- A flammable gaseous fraction of petroleum,consisting chiefly of butane. 粗丁烷石油中易燃的气体部分，主要由丁烷组成
- A flammable gaseous fraction of petroleum, consisting chiefly of butane. 粗丁烷石油中易燃的气体部分，主要由丁烷组成
- Butane and butylenes has the same characteristic with propane and propylene. 丁烯与丁烷表现出与丙烯、丙烷相似的特性。
- The butane conversion of catalyst aged in different pH has similar value. 在不同pH值老化的催化剂先驱体，经活化后对丁烷的转化率基本相同。
- A hydrocarbon radical, C4H9, with the structure of butane and valence1. 丁基一种碳氢化合的基团，C4H9，具有丁烷的结构，原子价为
- Other feed stocks can include ethane, propane, butane, and light and heavy naphtha but are not commonly used. 其它原材料包括乙烷、丙烷、丁烷以及一般不用的轻、重石脑油。
- Other feed stocks, which are less common, can include ethane, propane, butane and light and heavy naphtha. 其它不常用的原材料包括乙烷、丙烷、丁烷以及轻、重石脑油。
- After his father dies, Mr Godwin struggles with his dying wish to be cremated: the crematoriums are out of butane gas, the morgues are out of diesel. 父亲死后，戈德温尽力满足他的遗愿，进行火葬，而且火葬时不能有丁烷气，太平间不能有汽油。
- PETROLEUM INDUSTRY. IDENTIFICATION PLATE FOR COMMERCIAL BUTANE OR PROPANE CONTAINER, FILLED "BY WEIGHT". 石油工业。“按重量“注入的商用丙烷或丁烷容器用标记牌。
- Liquefied petroleum gases, such as propane and butane, have not been included as they are too numerous to mention. 由于它们数量众多，无法一一提及，液化石油气体，如丙烷和丁烷没有包括在这里。
- Gus was no longer able to pay her, but Mrs.Hobbs stayed on, using her Social Security check to buy butane and food. 格斯已经无力给霍布斯太太支付工钱了，但是她还是留了下来，用她的社会保障金购买丁烷和食品。
- Minerals, such as salt, solvent oil, cement, liquidized propane, liquidized butane, LPG, etc. 盐、溶剂油、水泥、液化丙烷、液化丁烷、液化石油气等矿产品；
- The torch itself runs on a 40/60 mix of propane and butane, making it similar in impact to a patio heater. 火炬本身消耗按照40/60比例混合的丙烷和丁烷，这使得它的影响等同于一个 室外取暖器。
