其解可供电子系统设计者参考。
The result is believed to be useful for electric system designer.
低的位速率有好的质量，提供给系统设计者更多的灵活性。
The lower bit rate gives good quality and provides system designers with additional flexibility.
操作系统设计者必须解决在外存容量不足的情况下如何实施存储扩充。
What operating system designers must solve is how to implement memory expansion when there is not enough external storage.
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