The casing was driven into the soft muds in the top.套管被送入软岩粉顶.The conventional casing centralizer can not meet the requirements of expandable casing.传统的套管扶正器满足不了可膨胀套管的扶正要求.We need large quantity of natural casing waste f...
Such estimates should be considered only as crude approximations.上述估算结果只能是粗略的近似值.There are two approaches generally used to arrive at these approximations.通常有两种方法用于获得近似解析式.They are not second - order approximations, but ...
中世纪时，drab（“本色布”）一词指的是一种农民用来制衣的非常普通的羊毛织物。In the Middle Ages the term "drab" denoted a very simple type of woollen cloth which was used by peasants to make their clothes.第七届广州国际纺织及制衣工业展览会开幕仪式现在开始!The opening ceremony of Ca...
Some people like to lie on the beach, but I prefer to go sightseeing.有些人喜欢在海滩上躺着, 但我喜欢去游览.A sightseeing tour of the city is included to help you get your bearings.市区观光游也包含在内，帮助你熟悉一下这里的情况。Most of our time was spent in sig...