The amount of C5/C9+ distillates in pygas, the amount of unsaturated hydrocarbon, mono - olefin and diolefin in C5 distillate, and the typical composition of C9+ are presented.是什么意思_The amount of C5/C9+ distillates in pygas, the amount of unsaturated hydrocarbon, mono - olefin and diolefin in C5 distillate, and the typical composition of C9+ are presented.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句