他是正在那个已经是陶瓷黏土矿的年夜坑里报告我们，康沃我科教战艺术正在动物战人类那个活死死的剧院里碰碰。
He told us that in this giant crater, once a China clay mine, in Cornwall science and art meet in a living theatre of plants and people.
采用正交试验法研究了以煤矸石代替黏土烧制水泥熟料时矿化剂的选择及最佳掺量问题。
The selection and optimal amount of mineralizer in sintering cement clinker with coal gangue as one of raw materials instead of clay was studied by orthogonal test.
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