1.
Its main components include propane, butane and butylene.
主要成份是丙烷、丁烷、丁烯等。
2.
Butane cylinders for portable butane cooker
GB16692-1996便携式用丁烷气瓶
3.
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
4.
Alkylation of isobutene and butane in acid ionic solution
酸性离子液体中异丁烷和丁烯的烷基化反应
5.
Isobutane Alkylation over Ionic Liquid Catalyst
离子液体催化异丁烷烷基化工艺条件
6.
hydrocarbon gases, usually propane or butane, kept under pressure.
烃类气体，通常为储存于高压下的丙烷或丁烷。
7.
Study of Solid Catalysts and Process for Alkylation of Isobutane with Butene;
异丁烷与丁烯烷基化的固体酸催化剂及工艺研究
8.
Investigation on Alkylation of Isobutane with Butene over Heteropolyacid Catalyst Supported on Carbonized Resin;
炭化树脂负载杂多酸催化异丁烷与丁烯烷基化反应研究
9.
Alkylation of C4 in Modified AlCl_3-Et_3NHCl Ionic Liquids;
盐酸三乙胺—三氯化铝离子液体催化异丁烷/丁烯烷基化反应的研究
10.
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。
11.
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。
12.
MoO_3/γ-Al_2O_3 Catalysts for the Dehydrogenation of n-Butane to Butenes
MoO_3/γ-Al_2O_3催化剂正丁烷催化脱氢制正丁烯的研究
13.
n-Butane Catalytic Dehydrogenation to n-Butene on MoO_3/γ-Al_2O_3 Catalysts
MoO_3/γ-Al_2O_3催化剂上正丁烷催化脱氢制正丁烯
14.
Isobutane Catalytic Dehydrogenation to Isobutylene on VO_x/SiO_2 Catalysts
VO_x/SiO_2催化剂上异丁烷催化脱氢制异丁烯
15.
high altitude LP gas
高丁烷含量的液化石油气体
16.
BTCA (butyltetracarboxylic acid)
丁烷四羧酸（无醛防皱整理剂）
17.
Cyclobutane exists predominantly in a "butterfly" conformation.
环丁烷主要成“蝶式”构象存在。
18.
(2) Cis or trans 2,4 dimethylthietane;
(2 )顺或反 2 ,4 -二甲基硫代环丁烷 ;