The preretinal ribbon like echo was classified into 4 different types.
将视网膜前的条带状回声分为4类。
Results NTHI could obviously increase discover rate of spontaneous echo-contrast, density and brightness of smoke-like echo.
结果NTHI明显增加心腔内自发性造影回声的检出率及云雾密度与亮度。
When editing audio files, you can cut, copy and paste parts of recordings, and then add effects like echo, amplification and noise reduction.
编辑音频文件时，你可以剪切，复制和粘贴部分录音，然后添加效果，如回声，放大和噪音减少。
你喜欢回声森林吗？为什么？
你喜欢回声森林吗？
你喜欢回声森林吗？
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