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| 21. | that the amplifier is adjusted to critical state, gives output at full extent and marry load best, the efficiency |
| 基于放大器调整到临界状态、满幅度输出和负载匹配的充分必要条件,分析了基本共射放大器效率和负载最大功率. |
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| 22. | The FCR/ PCR regulators offer maximum control and fuel efficiency on applications involving preheated |
| FCR/PCR流量调节阀具有最好的控制性能和最大的热效率，应用领域包括烧嘴预热空气，或者燃烧器工作在炉内压变化很大的情况下。 |
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