介绍了一种在石油加工过程中产生的特殊副产物 - 硬沥青.The byproduct of petroleum industry - hard pitch andphysical and chemical properties are introduced.摘要介绍了一种在石油加工过程中产生的特殊副产物 - 硬沥青.The byproduct of petroleum industry - hard pitch is recommende...
货币兑换成本仍是跨境贸易的最大障碍之一。Currency-conversion costs remain one of the biggest obstacles to cross-border trade.她从政期间是自由贸易的主要倡导者。She was a leading exponent of free trade during her political career.西非是可可豆贸易的中心。West Africa was th...
The house had many drawbacks, most notably its price.这房子有很多缺陷，尤其是它的价格。This method has quite a few drawbacks.这种做法弊病不少.Yet the corporate business organization has drawbacks as well as benefits.公司这一营业组织形式既有优越性,也有不利之处....