These consist of fabric of natural or synthetic fiber or glass cloth impregnated with a mixture of petroleum jelly and neutral mineral filler.
该包装带由自然织物、合成纤维或玻璃纤维织物注入凡士林油和中性矿物填充剂混合物制成，应与凡士林油底漆配合使用。
So liquid-liquid separation method and neutral oil floatation method are primarily selected to separate the mixture.
由此可以根据富碳性的差异初步选择液-液萃取或中性油浮选的方法来进行分选。
This investigation of the mechanism of premixing alum-rosin size for neutral-alkaline papermaking process focused on the mixture solution charge and particle size distribution.
中碱性造纸过程中松香明矾预混和过程的研究主要集中在混和液的电荷及粒度分布。
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