The following discussion of developable surfaces is based on that concept.下面关于可展面的讨论,便是基于这一理解.The thesis expounds the contents and methods of the developable teaching evaluation.提出了发展性教学评价的内容和一般方法.Resolution of high - pe...
用于高炉 、 热风炉砌筑刚玉砖、莫来石砖 、 硅线石砖 、 低蠕变高铝砖.Used for corundum bricks, mullite bricks, silicate bricks masonry in blast furnaces, hot air stoves.硅线石耐火浇注料适用于流化床锅炉的燃烧部位.Sillimanite refractory castable is good in use at combustion ...
I floundered around trying to decide what I ought to do next.我举步维艰,不知道下一步该做什么." A -- a - mis -- but, Rhett, she --'scarlett floundered." 小 ---- 产,可是, 瑞德, 她 ---- " 思嘉早已给吓得说不出话.We floundered through deep snow to get t...
The technology uses an electrochemical process to produce electricity.这种技术利用电气化学反应发电。Correspondingly, any complete electrochemical cell can be separated into two hypothetical half - cells.同样, 任一完整的化学电池也可分为两个假设的半电池.Black ...