Shanghai Xav: Yuav Ua Li Cas Kom Tau Txais Qhov Zoo Tshaj LED Lej, Physics, Teeb Pom Kev Sib Txuas?
[ntawv nyeem / Engineering LED Yue Motte], Chivkeeb, nws sau, thawj hnub, Vajtswv hais tias, Cia muaj qhov kaj thiab muaj qhov kaj.just be the foundation of all things exist. Los ntawm lub teeb ntuj mus rau hluav taws, mus rau t
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