电信号压力表集压力表、光电传感器、电子开关电路和小型继电器为一体，机构紧凑，使用方便，安全可靠。
Set signal pressure gauge pressure gauges, photoelectric sensors, electronic switches and circuit relay as one small, compact bodies, easy to use, safe and reliable.
香农写于1938年的硕士论文，“继电器与开关电路的符号分析”，应用布尔代数建立现代数字电路的理论基础。
Shannon 's 1938 master's thesis, A Symbolic Analysis of Relay and Switching Circuits , used Boolean algebra to establish the theoretical basis of modern digital circuits.
香农写于1938年的硕士论文，“继电器与开关电路的符号分析”，应用布尔代数建立现代数字电路的理论基础。
Shannon 's 1938 master's thesis, A Symbolic Analysis of Relay and Switching Circuits , used Boolean algebra to establish the theoretical basis of modern digital circuits.
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