PERL is the driving language it controls the build or deployment flow, checks return codes and based on the logic executes through a designed build and deployment path.
PERL是驱动语言，它控制构建或部署流，检查返回的代码，用设计好的构建和部署路径执行逻辑操作。
A flow path of hot water can be provided with a water inlet control valve, a temperature sensor, a water return pump and a cold-hot valve.
热水流程可以按装进水控制阀，温度传感器、回水泵、冷热阀门。
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