Tus ntsuas kub ntsuas & Hygrometer

Analog Thermometer & Hygrometer Featured Image

E19.9025

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Khoom Nthuav dav

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Dia.128mm

Yav dhau los: DIY Hnub Ci Rauv

Tom ntej: DIY Solar System Tus Qauv

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$Light Refraction & Reflection Demo.$

Teeb pom kev zoo & Reflection Demo.
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Hluav Taws Xob Hluav Taws Xob 0.1g
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Hlau Gyroscope Qauv