Surface treatment is one of the key steps in automotive development, and has great influence on body quality and development cycle.
光顺是汽车开发的关键步骤之一，对汽车车身质量和开发周期有着重大的影响。
Objective To find out the differences of body surface area between Tujia and Miao students, and to provide reference for making a health appraisal system for students' growth and development.
目的比较土家族和苗族城镇中小学生体表面积的差异，为建立中小学生生长发育健康指标评价体系标准提供依据。
In theory, the successful development of the spray can be mucosal surface in the body a "protective shield" to prevent viruses;
理论上，成功开发的喷雾，可在人体黏膜表面形成一层“保护罩”，防止病毒入侵；
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