Phosphoric acid concentration after the initial purification to remove impurities in the majority of solid-phase material, the phosphate raw materials (agricultural commodities phosphate).
浓磷酸经过初级净化处理以除去大部分固相物杂质，得到原料磷酸(农用商品磷酸)。
Concentration distribution in gas and solid as well as conversions were found in the bubble phase and emulsion phase at different time stages.
如此可解得不同时间时气体和固体的浓度分布和气泡相及乳化相中的转化率。
These pumps are widely used for applications including filtration, sample concentration, solid phase extraction. They are the important basic instruments in the lab.
无油真空泵广泛应用于过滤、样品浓缩、固相萃取等装置中，是实验室重要的基础设备。
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