After numerous experiments we came to symmetry of sound and timing correspondence of the Musical Instruments in the sound image.

经过数次实验，我们得出对称声音和乐器发声的可视图。

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After numerous experiments and failures, in 1994 the Yawei Steno Machine made its debut at a national computer exhibition, attracting wide attention.

经过无数次的试验和失败，亚伟速录机在1994年全国计算机展览会中首次亮相，赢得了社会各界的广泛关注。

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