爱词霸英语   汉语   手机版   软件版下载 | English
每日一句:正在加载...
1.Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.
沥青，人造沥青某种厚厚的、黑而粘的物质，由炭焦、木焦或石油的剩余物中提炼出来，用于防水、盖屋顶、填缝和铺路收藏指正
2.The residue of distillation apparatus of cane molasses alcohol
甘蔗糖蜜酒精蒸馏设备的积垢收藏指正
3.The distillation yield before 500(°C) of Maxila atmospheric residue(AR) and Maxila/Cabinda(mass ratio 3/7) blending atmospheric residue are investigated by adding a variety of No.
在马西拉常压渣油和马西拉/卡宾达(质量比3/7)混合油常压渣油添加了具有不同长链和不同极性基团的1~5号活化剂后,用简易蒸馏的方法研究了减压拔出率变化。收藏指正
4.Cis-13-docosenoic acid recovery from docosenoic acid residue by short-path distillation
芥酸残渣短程蒸馏回收工艺研究与应用收藏指正
5.a dark bituminous substance found in natural beds and as residue from petroleum distillation; consists mainly of hydrocarbons.
一种沥青质的黑色物质，存在于天然矿床中，亦可用蒸馏法提取石油中的矿渣获得，主要由碳氢化合物组成。收藏指正
尝试查询