本文提出的型槽系设计方法及展宽系数公式，对于类似产品辊锻工艺设计有普遍指导意义。
The design method of groove system and wide extension coefficient formula proposed in the paper are very significant for roll forging design of other similar products.
实验室中对其压致展宽系数的测量能直接为天体间和地球大气层中SO_2浓度的检测提供必要的数据。
The measurement of pressure broadening coefficient of SO_2 in laboratory can provide necessary data for concentration monitor in interstellar and Earth's atmosphere.
随着孔隙率、孔径的减小，多孔铝的共振吸声系数有所下降，吸声频谱曲线向低频方向移动，且频带宽度展宽。
When the porosity and pore diameter reduced, the sound absorption curve moved to the low frequency zone and the frequency bandwidth increased at the same time.
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