The stone cage nets (mesh) angular network metal wire weaving (six mesh) made of metal cages, the line diameter is according to the size of the hexagonal and not the same.

石笼网(格宾网)是金属线材织造的角形网(六角网)制成的网箱，运用的金属线径是根据六角形的巨细而不一样。

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Compared with nature sand, MS (manufactured sand) is characteristic of rough particle and angular, with a large amount of stone dust and lithofacies diversity.

与天然砂相比，机制砂富含石粉，颗粒表面粗糙多棱角，并且岩性多样。

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