Thus, the mineral crystalline morphology of natural silica sand is an important parameter for use in foundry.
考查了铸造用天然硅砂的矿物晶体形态，可将其大致分为单晶体和多晶集合体两类。
The block is prepared with pulverized fuel ash, natural silica sand and lime through steaming and pressing with a pressure vessel. In particular, a simulated stone layer 3 is added outside the block.
所说的砌块是由粉煤灰、天然硅沙和白灰经高压容器蒸压而成，特别是在砌块的外层有一层仿石层3。
Compared to the alumina beads, it has a higher fracture toughness and lower hardness. It is an economic ceramic bead to replace Kaolin bead, silica sand and other natural grinding media.
相比传统的氧化铝微珠，具有更高的断裂韧性和较低的硬度，是一种代替高岭土球、河砂和铁粒等天然材料研磨介质的经济型和实用型的陶瓷珠。
Such as Natural Dolomite stone, River Sand, Silica Sand, Construction Sand, Quartz stone and much more.
如自然白云石石料，河砂，石英砂，建筑砂，石英石等等。
Such as Natural Dolomite stone, River Sand, Silica Sand, Construction Sand, Quartz stone and much more.
如自然白云石石料，河砂，石英砂，建筑砂，石英石等等。
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