This paper narrates the effect and the demand of titanium liquid filter aid; and introduces the use of diatom earthfilter aid in the manufacture of titanium white by sulfuric acid method.
叙述了钛液助滤剂的作用及其要求，并介绍了硅藻土助滤剂在硫酸法钛白生产中的应用。
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It would also need good shielding and special electronics to filter the DSSS signal from the radio-noise created by the Earth, the sun and the rest of the galaxy.