Install with the arrow on valve body pointing in the direction of flow.

安装时要使阀体箭头指向水流方向。

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Distinctive orange handle indicates "open/close" and direction of flow at a distance.

独特的橙色手柄可以远距离指示“启闭”和流体方向。

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Install regulator in the line with the arrow on the body pointing in the direction of flow.

在管道上安装调节阀，将阀体上的箭头指向水流方向。

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The flow of information is really a flow of electrical potential and it goes in one direction only.

信息流实际上就是电势差的流动,并且流动是单向性的

耶鲁公开课 - 生物医学工程探索课程节选

That's what this arrow at the right shows, the direction of the flow of information.

这就是右边这个箭头的含义,即信息流动的方向

耶鲁公开课 - 生物医学工程探索课程节选

Connectivity includes other influencers they read regularly, if other influencers connect to them, and the direction of flow of such influence.

FORBES: Can You Measure Your Digital Eminence?

No one has much clue about conditions in the countryside, but the direction of the refugee flow suggests that life there is even worse than in the capital.

ECONOMIST: Liberia

Creatiity is a input of spontaeneous flow of human mind in a proper direction from incubating the ideas to its final output i.e, conclusion.

FORBES: 10 Reasons Why We Struggle With Creativity