英语语法分析

The respiratory quotient of n-hexadecane and n-octadecane were found to be 0.44 and 0.47 respectively.

异烷似较难氧化。 对正十六烷和正十八烷的呼吸商依次为0.44 和0.47。

Phase change microcapsule was prepared by melamine-formaldehyde resin and n-octadecane through in-situ polymerization.

采用原位聚合法用三聚氰胺-甲醛树脂包覆正十八烷，制备出相变微胶囊。