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Class E amplifier is a new kind of high-efficiency power amplifier.
类功率放大器是一种新型高效率放大器。
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The scheme has high security class and efficiency used in signature.
实践证明该体制具有较高的安全性，而且签名效率也较高。
youdao
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The scheme has high security class and efficiency used in signature.
实践证明该体制具有较高的安全性，而且签名效率也较高。
youdao