for example, can be butane or isobutane. 例如可以是丁烷或异丁烷。
Cyclobutane exists predominantly in a "butterfly" conformation . 环丁烷主要成“蝶式”构象存在。
This phenomenon does not occur with 1-2-dimethylenecyclobutane . 在1,2--二亚甲基环丁烷中并不发生这种现象。
Butanes and butenes can be maintained in the liquid states at ambient temperature under quite moderate pressure . 在适当的大气压力及常温下,丁烷和丁烯均可保持液体状态。
cyclobutane exists predominantly in a "butterfly" conformation, in which the dihedral angle between the two wings is about 20°。 环丁烷主要成“蝶式”构象存在,其中两翼间的二面角大约为20。
Specification for commercial butane and commercial propane 商业用丁烷和丙烷规范
Who would have blown up an airplane .根据fbi ,如果当时他有一个丁烷火机
Propan butan gaslamps ; requirements and testing 丙烷丁烷煤气灯.要求和检验
Standard specification for isobutane thermophysical property tables 异丁烷热物理性能表
Standard specification for normal butane thermophysical property tables 正丁烷热物理性能表