They refined crude oil into various petroleum products.他们将原油提炼成各种石油产品.ABout 90 % of the waxes in commerce are recovered by dewaxing petroleum.工业用蜡中约有90%是由石油中回收的.The petroleum exploration geologist working with subsurface...
The composition of coal ash and mineral matters obviously influence coal ash fusibility.论述了煤灰熔融性温度与测试气氛、煤灰成分、矿物组成等因素之间的关系.Granite as raw material, PSA is made in a series of aggregate reactions of chemical fusibility.选用花...
我妈妈的家族有很多人是生活在达科他西部.My mama's family, a lot of them had lived out west in the Dakotas.北达科他的冬季秀始于1937年.The North Dakota Winter Show started in 1937.自1987年起, 牛仔诗人会在梅多拉的达科他牛仔诗聚会相聚.Since 1987, cowboy poets have met at t...
What was I asking about? Ay, yes, I was asking what did you do yesterday.刚才我问 什么 ?哦, 有了, (想起来了)我是问你昨天做了些什么.'Ay , ay, sir,'cried the cook, in the passage.“ 是, 先生.”厨子在走廊里大声答道.Ay ! Louder , Vengeance, much louder,...
介绍一种新型铁路用玻璃钢操纵台,并对其制作工艺加以详细论述.The manufacturing process is also described in detail in this paper.有控制系统和自动化设备设计和控制操纵台建设的经验.Experienced in control system and automatic equipment design and control cabinet construction.操纵台...