Relay control circuit can be understood as a topo graph.

继电控制线路原理图可以抽象为网络拓朴图。

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It is gradually replacing the traditional relay control system.

它正逐步取代传统的继电器控制系统。

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PLC or Relay control with optional operation of manual and semi-auto.

有电脑、继电器两种控制方式，设有手动、半自动两种操作方式。

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Sendmail's new NT 3.0 product provides NT administrators with security features, like header scanning, relay access control, and better defenses against theoretical attacks, to which Unix and Linux system administrators are already accustomed.

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In April, China launched its first tracking data relay satellite to lessen its dependency on ground satellite control and relay stations.

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They take aim at one or more of three emerging targets: These are peroxisome proliferator-activated receptors (PPARs), which are akin to master relay switches that control how the body uses sugar and fat.

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