【經緯度教學演示儀（32cm） 中英雙語介紹】
一、中文版（420字）
本款經緯度教學演示儀專為初高中地理及天文基礎教育研發，采用32厘米直徑球體設計，精準還原地球形態與空間坐標系統。主體由高精度工程塑料打造，兼顧輕量化與耐用性，可滿足課堂頻繁演示需求。
產品創新融合傳統地球儀與經緯儀原理，通過立體化結構直觀展現地理坐標系運作機制。球面采用雙色激光印刷工藝，藍色海洋與大地色陸地形成鮮明對比，0.5mm精度的經緯網絡覆蓋整個球體，赤道、回歸線、極圈等關鍵緯線均以不同色標突出顯示。可拆卸式黃道面環配備23.5°傾斜支架，動態模擬地球公轉軌道平面，幫助學生理解四季成因與太陽直射點移動規律。
教學功能方面，該儀器支持六大核心演示：1）經線與時區對應關系 2）緯線與氣候帶分布 3）晨昏線動態模擬 4）太陽高度角計算原理 5）地理坐標定位實踐 6）簡單天文方位測定。配套360°旋轉金屬支架內置15°間隔定位卡扣，教師可精確展示地球自轉引起的天體視運動現象。
底座集成方位刻度盤與簡易測角裝置，通過可調節仰角指針實現基礎天文觀測教學。球體表面特殊啞光處理有效避免反光干擾，保證教室各角度可視性。所有組件均采用圓角安全設計，符合教學場所安全規范。
本教具通過多維度可視化設計，將抽象的空間坐標系具象化，特別適用于《地球運動》、《地理坐標》、《基礎天文觀測》等課程模塊。實踐證明，該儀器能有效提升學生對三維空間概念的認知能力，培養地理空間思維素養。
二、English Version（230 words）
Geographic Coordinate Demonstrator (32cm)
This innovative teaching instrument integrates terrestrial and celestial coordinate systems within a 32cm diameter sphere. Crafted from durable engineering plastic, the device features a tilt-adjustable base replicating Earth s 23.5° axial inclination, enabling dynamic demonstration of planetary motions.
Key features include:
- Dual-layer azimuth/elevation scale with 360° rotation capability
- High-precision etched longitude/latitude grid (1° interval)
- Removable ecliptic plane ring for seasonal demonstration
- Anti-glare surface treatment ensuring classroom visibility
- Safety-enhanced components with rounded edges
The sphere s surface displays essential geographic elements through advanced printing technology, while the detachable declination dial allows basic astronomical measurement exercises. Teachers can effectively illustrate celestial navigation principles, time zone calculations, and solar altitude variations through hands-on manipulation.
The integrated tilt mechanism supports 16-position locking for precise angular demonstrations. A unique twilight line simulator helps visualize diurnal cycles. This multidisciplinary tool bridges geography and astronomy education, making abstract spatial concepts tangible for secondary students.
Practical applications cover:
- Coordinate system fundamentals
- Earth-Sun relationship
- Seasonal variation mechanisms
- Astronomical observation basics
- Spatial reasoning development
Designed for interactive learning, this demonstrator enhances STEM education through three-dimensional problem-solving scenarios. Its compact size (32cm diameter) ensures convenient classroom deployment while maintaining optimal detail visibility. All components withstand daily educational use, providing lasting value for geography and astronomy programs.
