version of selection

• 选型

version of selection的用法和样例：

例句

1. When conducting pattern selection of ventilatory fan, corresponding correction should be performed.
   高海拔条件下，进行风机的选型时，应根据相似比定律对计算风压和功率进行修正。
2. Criteria for selection is minimum flow, normal flow, maximum flow and pressure drop across the valve.
   选型标准是最小流量，正常流量，最大流量和通过阀门的压降。