他们是一球形 、 环形或锥形的一部分.They are portions of a sphere, a torus or a cone.可以认为锥形的自由基比较活泼.It is argued that the pyramidal radical would be more reactive.并且锥体和锥形圈可以是双锥形的.Both the conic ring and the cone may be double ones....
Explain the methods of depreciation and amortisation used for the main fixed and intangible assets.解释用于主要固定及无形资产的折旧及摊销方法.The depreciation of other currencies in Asia has also caused a substantial reduction in tourism.亚洲其...
The main characteristic of roller grindery and the survey of wide - thick plate mill engineering are introduced.介绍宝钢宽厚板轧机工程概况及磨辊间主要特点,阐述了宽厚板轧机磨辊间设计中应注意的问题....