The Miaohe-type biotas occur in the black shale and siliceousshale in the transitional areas from the late open platform facies to deep-water shelf-bathyal facies.
By the experiments, the effects of several mineral admixtures, such as silica fume, superfine slag and siliceousshale on the High Strength Concrete (HSC) is researched.
通过实验,研究了硅灰、超细矿渣、硅质页岩几种矿物质掺合料对高强混凝土强度的影响;
3
According to the nature, Guangxi limestone is separated into three types: pure limestone, siliceous limestone, mixed sand shale or limestone of igneous rock.