Laboratory test results show that the use of a calcining and double step hydrochloride acid leaching technique can satisfyingly do it.

实验结果表明，采用煅烧二次酸浸工艺能按照上述要求有效地调整该高岭土的成分。

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Laboratory test results show that the use of a calcining and double step hydrochloride acid leaching technique can satisfyingly do it.

实验结果表明，采用煅烧二次酸浸工艺能按照上述要求有效地调整该高岭土的成分。

youdao