design and type-selection的用法和样例：
例句
- Merits and demerits have been obtained via calculation of resistance and power for reference to design and model selection.
通过阻力及功率计算，得出气垫输送机的优缺点，供设计选型参考。 - Results are significant to reasonable design and selection of large step pump stations,structures and functions of pump unit equipments.
成果对大型梯级泵站形式和机组设备结构功能的合理设计选型有重大意义。
