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Longitudinal waves 2
S4_化學_CH9_A_物質結構的分類
Longitudinal waves 1
S4_化學_CH8_C3_共價分子的化學式及其預測
S4_化學_CH9_E3_巨型金屬結構物質的性質
CH3-Test-Q5
S4_化學_CH8_ B2_鍵合電子對和孤電子對
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CH3-Test-Q9
YU CHUN KEUNG MEMORIAL COLLEGE