单谱线多元件透镜可以有不同的外形和材料，有玻璃的，二氧化硅的，蓝宝石的和钙氟化合物的。
Singlet and multielement lenses are available in a wide variety of configurations and materials, including glass, fused silica, sapphire, and calcium fluoride.
本文主要研究了固化剂、纳米二氧化硅粉和碳酸钙粉等外加剂对硅橡胶模具线收缩率的影响。
The effects of solidified agent, nanometer silicon dioxide powder and calcium carbonate powder on line contraction percentage of silicon rubber mould were discussed in this paper.
甜菜根色素，凝胶，磷酸二钙，植物纤维，二氧化硅，植物硬脂酸镁。
Other Ingredients: Beet Root Color, Gelatin, Dicalcium Phosphate, Cellulose (Plant Origin), Silica, Vegetable Magnesium Stearate.
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