C<span style、"font-family: 宋体;">（金刚石）</span>
Cu（s<span style、"font-family: 宋体;">）</span>
H<sub>2</sub><span style、"font-family: 宋体;">（</span>g <span style="font-family: 宋体;">）</span>
O<sub>2</sub><span style、"font-family: 宋体;">（</span>g<span style="font-family: 宋体;">）</span>