以下为句子列表：
英文: By the end of 1922, the government had licensed around 550 stations across the United States, with most of these stations broadcasting with modest power levels on 360 meters, or approximately 832.8 Kilohertz.
中文: 到1922年底,政府准许了大约550个驻地横跨美国,与大多这些驻地播放以普通的力量水平在360米,或大约832.8千赫。
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英文: Clock frequencies up to hundreds of kilohertz might be achievable, but don't look for gigahertz-rated organic chips anytime soon.
中文: 或许可以做到几十万赫兹的时脉，但在短期内别想要有10亿赫兹等级的有机晶片。
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英文: Ultrasound frequencies generally range between 20 kilohertz and 50 kilohertz, depending on application requirements. Ultrasonic cleaning is typically performed at temperatures between 122 F and 176 F .
中文: 工业超声波清洗常用频率在20千赫到50千赫之间，常用清洗温度在50-80℃之间。
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