科学素养与生活应用·英语30篇（2）

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气象站湿度传感器如何非接触式测量水蒸气含量

Capacitive humidity sensors use polymer films whose dielectric constant changes with absorbed moisture.
As ambient humidity rises, water molecules penetrate the film and alter its electrical capacitance.
This change is measured precisely by an oscillator circuit whose frequency shifts proportionally.
Resistive sensors rely on hygroscopic salts whose conductivity increases with water absorption.
Both types avoid moving parts, ensuring long-term stability in outdoor installations.
Calibration against chilled-mirror dew point meters ensures traceable accuracy within ±2% RH.
Temperature compensation circuits correct for thermal drift during rapid weather transitions.
Wireless stations transmit raw sensor data to central servers for real-time map generation.
High-resolution networks now detect microclimates near forests, rivers, or urban heat islands.
These measurements directly feed drought forecasting models and wildfire risk assessments.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Both types avoid moving parts, ensuring long-term stability in outdoor installations. 两类传感器均无活动部件，确保户外安装长期稳定。
Temperature compensation circuits correct for thermal drift during rapid weather transitions. 温度补偿电路在天气快速变化时校正热漂移。
These measurements directly feed drought forecasting models and wildfire risk assessments. 这些数据直接输入干旱预测模型和野火风险评估系统。

这篇中文题目最接近哪一句？气象站湿度传感器如何非接触式测量水蒸气含量一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？电容式湿度传感器采用聚合物薄膜，其介电常数随吸收的水分而变化。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） How Humidity Sensors in Weather Stations Measure Water Vapor Without Direct Contact How to cook noodles A maths worksheet

Both types avoid moving parts, ensuring long-term stability in outdoor installations.

Both types avoid moving parts, ensuring long-term stability in outdoor installations.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Both types avoid moving parts, ensuring long-term stability in outdoor installations.