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Control automático de instrumentos, ¿qué significa PR aquí?

2020-08-31View Original

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No sé si algún experto sabrá qué significa PR aquí
Reply #22020-08-31
En la captura de pantalla que hiciste, sí hay un relé neumático
Reply #32020-08-31
Relé neumático: se puede considerar como un amplificador neumático.

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