... 你应该及时解决矛盾 » You timely resolve conflict 三种化学物质 » Three chemical substances 企业所得税 » Corporate income tax ...
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食物中的能量按三种化学物质的形式存在--- 糖类，蛋白质和脂肪。
The energy in food is in the form of three kinds of chemical materials---carbohydrate, protein and fat.
结论东莞地区职业性接触性皮炎主要变应原为三种化学物质，调查结果有助于临床指导该疾病的预防和治疗。
Conclusions the main allergens of occupational contact dermatitis in Dongguan city are three kinds of chemical materials. This study is helpful to the prevention and treatment of the disease.
第三种是某些基本的化学物质，如碳、氧和氮。
A third is certain basic chemicals such as carbon, oxygen and nitrogen.
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