Siliceous materials have a great impact on the world economy.

硅质的材料对世界经济有很大的影响。

The chemical property of siliceous limestone is very stable.

硅质石灰岩的化学性质非常稳定。

Commercially siliceous materials are rarely used alone and are often processed with natural minerals.

商业上富含硅的材料很少单独使用，通常会与天然矿物一起加工。

Gritrock is siliceous sandstone.

粗砂岩是硅酸砂岩。

A siliceous volcanic ash used to produce hydraulic cement.

火山灰水泥，火山石用来生产水硬水泥的含硅火山灰。

The ore bearing wall rocks are composed mainly of siliceous phosphorites.

与闪锌矿一起构成矿石的主要金属矿物。

L Siliceous soil - soil composed of acid rock that are crystalline in nature.

l硅酸土壤-由透明的酸性岩石组成的土壤。

Additions for concrete. Siliceous additions. Specifications and conformity criteria.

混凝土添加剂。硅质添加剂。规范和符合性准则。