And solenoid valve, electro - pneumatic converter has a great quality of life.

并且对电磁阀的 、 电空转换器的质量寿命有很大的益处.

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They may be fitted with signal feedback device and electro pneumatic valve positioner.

可选配反馈信号装置及电气阀门定位器.

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Intelligent electro - pneumatic valve positioner based on - wire system is one of main developing trend of valve positioners.

二线制智能电气阀门定位器是阀门定位器的主流发展方向.

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The fundamental composition and functional principles of the JZ - 7 electro - pneumatic braking system are analyzed in detail.

分析了JZ—7电空制动系统的基本组成和作用原理,提出了在动车组加装尾部动车单独缓解功能的设计方案.

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