Color seems to be integral component of an OTC product, the team says.
研究团队称：颜色似乎是OTC药物不可或缺的元素。
2
The aesthetic quality of a product is integral to its usefulness because products we use every day affect our person and our well-being.
产品的美感是实用性不可或缺的一部分，因为每天使用的产品都无时无刻的影响着人类和我们的生活。
3
The die construction, running principle and features, technological process flow, technique parameters and product performance of aluminum alloy integral naves by gravity die casting are described.