问题描述:
写出下列化学符号表示的含义
N:__________、__________
O2:__________、__________、__________、__________
5H:__________
CO2:__________、_________、__________、__________
N:__________、__________
O2:__________、__________、__________、__________
5H:__________
CO2:__________、_________、__________、__________
问题解答:
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