几十数千 tens and thousands of
十八个几千 eighteen thousands
几十千
Tens of thousands
以上为机器翻译结果，长、整句建议使用 人工翻译 。
存储器占用已经减小为几十千字节的标准
Memory utilization has been reduced to a standard of tens of kilobytes
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加工成型的石英晶体的频率可从几十千赫兹到数百兆赫兹。
Quartz crystals are manufactured for frequencies from a few tens of kilohertz to hundreds of megahertz.
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