For the route of selective separation and enrichment with sodium oxide, it is very difficult for one-step route to produce quite pure enriched slag.
对于钠系选择性分离富集路线，采用一步调渣法路线难以取得较高纯度的富钛渣。
Below the glass strain temperature, interdiffusion coefficients are almost independence of sodium oxide concentration in the glasses and somewhat increase with long ion exchange time.
低于玻璃应变温度，互扩散系数几乎不依赖玻璃中的氧化钠浓度，而略随离子交换时间增加而增大。
Below the glass strain temperature, interdiffusion coefficients are almost independence of sodium oxide concentration in the glasses and somewhat increase with long ion exchange time.
低于玻璃应变温度，互扩散系数几乎不依赖玻璃中的氧化钠浓度，而略随离子交换时间增加而增大。
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