Once the bacteria stick to the enamel, they trigger a process called demineralisation - they turn sugar in the diet into a harmful acid that starts to create holes in the teeth.
它们一旦附着在牙齿的珐琅质上，就会引发一种被称为去矿化作用的过程--- 它们把饮食中的糖转化成有害的酸并在牙齿上腐蚀出洞眼。
The fact that copper pollution of laccaic acid in stick lac could not be avoided was concluded after considering its biological source and chemical nature.
从紫胶的生物来源和紫胶红色素的化学本质分析，紫胶原胶中紫胶红色素的铜污染是不可避免的。
The components of starch, fat, amino acid and ash were determined to analyzed nutrient components of iron stick yam and bubil.
对怀山药道地产区的铁棍山药及其零余子中淀粉、脂肪、氨基酸和灰分等营养成分进行分析比较。
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