本课题组选用广东凉茶中具有代表性的黄福兴清火排毒茶作为研究对象，对其安全性进行了系统研究，为凉茶的安全性评价提供科学依据。

Used herbal tea in our group representative of Huang Fuxing Guangdong tea for the study, carried out its security system for safety evaluation of herbal tea to provide the scientific basis.

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总之，1930年代初广东中学科学教育处于理想的求索与实际的困顿中，这是时代的必然也是国情的必然。

In a word, the science education of middle school of Guangdong during the 1930s was between seeking and puzzling, it's a certainly consequence of the national conditions and the limit of times.

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总之，1930年代初广东中学科学教育处于理想的求索与实际的困顿中，这是时代的必然也是国情的必然。

In a word, the science education of middle school of Guangdong during the 1930s was between seeking and puzzling, it's a certainly consequence of the national conditions and the limit of times.

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