搜尋標籤: "oxygen"

水分子

說明水分子是由氫原子和氧原子組成的。

   ronson@hkecl.net 0 個讚 1,304 次播放

Air and Burning (English subtitles available)

This programme is divisible into 5 parts as follows: 1. Composition of Air Under room temperature and pressure, air is in the gaseous state, but it can be turned into the liquid state through…

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