1特点和用途(1)特点本教具用最直观的形式,模拟了现实生活中复杂的温度环境(-20℃～0℃～60℃)。此演示器设计新颖、构思巧妙、取材容易、结构简单、性能稳定、易于操作、安全可靠,有利于引发学习兴趣和思考。使用中克服了温度计液面的不确定性,创设了理想的温度环境,有利于学 1 Features and Uses (1) Features This teaching aid uses the most intuitive form to simulate a complex temperature environment (-20°C to 0°C to 60°C) in real life. This demonstrator is novel in design, ingenious in design, easy to draw, simple in structure, stable in performance, easy to operate, safe and reliable, and conducive to stimulating learning interest and thinking. In use, it overcomes the uncertainty of the liquid level of the thermometer, creates an ideal temperature environment, and is conducive to learning