应该避免和粘合剂预先混合，因为它会导致暂时性粘合剂沉淀。
Should avoid premixing with the binder as it can cause temporary binder precipitation.
首先得到了采用预先合成锡榍石制备色料效果要好于一次性合成色料的结论，为化学共沉淀前驱体合成法找到了理论依据。
Firstly, the pigment prepared by presynthesized tin sphene was obtained and has a good colour development. Theorical evidence was found by coprecipitation method.
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