That said, we realize that mass media advertising is only part of the equation.
这说明我们意识到大众传媒广告只是整个传播项目的一部分。
The relation of scale conversion is gotten by use of the mass conservation equation.
同时，引入质量守恒方程，得出弹体的比例尺度换算关系。
The relation of scale conversion is gotten by use of the mass conservation equation.
同时，引入质量守恒方程，得出弹体的比例尺度换算关系。
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