With increasing beam separation, the number of interference fringes increases and the fringe separation and visibility decrease.
随着光束间距的增大，干涉条纹间距减小，条纹数目增多，条纹可见度减小；
Combined wave beam guardrail can be used in narrow central separation belt.
组合波形梁护栏可在窄中央分隔带上使用。
With increasing beam waists, the number of interference fringes increase, but the fringes separation and visibility change little.
光束束腰半径增大时，干涉条纹数目增多，条纹间距变化很小，对条纹可见度影响不大。
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