分析了符合传感器网络MAC算法中节点周期性侦听要求的节点寿命估算问题。
The lifetime estimation issue is analyzed with consideration to the periodical listen required by common WSN media access control (MAC) algorithms.
试验结果表明：高分子湿度传感器输出信号符合二次拟合曲线变化规律。
Experiment result shows that output signal of this macromolecule humidity sensor accords with variational rule of secondary polynomial fitting.
温度传感器由AC交流电源供应，配备的电线符合电线规章。
Heat meters designed to operate from an ac mains supply shall be wired in accordance with wiring regulations applicable.
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