n.气体分馏塔 light ends: 初馏分; 轻馏分; 轻质烃;指light ends fractionation: 轻烃分馏light ends fractionation unit: 气体分馏装置light ends plant: 气体分馏装置light ends removal column: 轻质烃蒸除塔下载手机词典可随时随地查词查翻译