direct relation telemeter

例句：

1. 1. The direct relation telemeter is used to monitor the temperature of the environment.
   直接关系测量仪用于监测环境的温度。
2. 2. The direct relation telemeter can detect changes in the soil moisture content.
   直接关系测量仪可以检测土壤湿度的变化。
3. 3. The direct relation telemeter is crucial for monitoring the health of crops in the field.
   直接关系测量仪对于田间作物的健康监测至关重要。