With different incidence orientation of the modulated IR laser relative to acoustic chamber, the sound pressure magnitude of resonance mode varies.

值得关注的是，红外激光相对于声共振腔的入射方位不同则激励产生的光声信号幅值也不同。

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While these steps sound much like any scientific model construction method, the context here is for order of magnitude, simple models, and comparison to known quantities.

这些措施虽然很像健全科学化建设示范的方法，就是在此背景问题的严重性，简单的模式，相对于已知数量。

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