These brightenings are known as light echoes.
这些明亮的部分称作光回声。
Smaller light echoes have been seen around supernovae.
规模较小的光回音可在超新星附近看见。
By resolving the X-ray spectral line from iron, Suzaku's observations were crucial for eliminating the possibility that subatomic particles caused the light echoes.
通过分解铁的X光谱线，Suzaku的观测对排除亚原子粒子产生光回声的可能性至关重要。
The vertical screening filters light and echoes the tall nature of the forest.
垂直百叶滤过阳光，与森林的自然相呼应。
The scattered light from the first laser is collected and analyzed with an interferometer to demodulate the surface vibrations caused by the return echoes of the ultrasound at the surface of the part.
由表面的超声表面位移使检测激光束散射以产生经相位调制的光；收集经相位调制的光；对经相位调制的光进行处理来获得代表表面处的超声表面位移的数据；
The scattered light from the first laser is collected and analyzed with an interferometer to demodulate the surface vibrations caused by the return echoes of the ultrasound at the surface of the part.
由表面的超声表面位移使检测激光束散射以产生经相位调制的光；收集经相位调制的光；对经相位调制的光进行处理来获得代表表面处的超声表面位移的数据；
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