ultra-dry bulb hygrometer

例句：

1. 1. This ultra-dry bulb hygrometer is highly accurate and reliable for measuring humidity in dry environments.
   这种超干球湿度计在干燥环境中测量湿度非常准确可靠。
2. 2. The manufacturer claims that their ultra-dry bulb hygrometer can detect moisture levels down to 0.5% relative humidity.
   制造商声称他们的超干球湿度计可以检测到相对湿度降至0.5%的水分水平。
3. 3. In agriculture, this instrument is used to monitor soil moisture levels during irrigation, ensuring proper watering without overwatering.
   在农业中，这种仪器用于在灌溉期间监测土壤水分水平，确保适当的浇水而不过度浇水。