According to the selection valve flow path.

根据流量选择阀的通径。

Can the desired flow path safely and effectively be achieved.

是否能安全有效的达到理想的流动路径？

The inside air fan conveys the air in the inside air flow path.

输送所述内部空气风路的空气的内部空气送风机；

Arrow with optional ends indicating flow path or direction of rectilinear motion.

箭头，其指示流动路线或线性运动方向的端点可以选择。

Nothing is not the only failure to focus our efforts and quietly from the palm of the flow path .

没有什么东西是得不到的。只有抓不住而从掌心中悄然流走的。