detection of self-dual function 自双反函数检测
self-anti dual function 自反双重函数
self anti-dual function 非自对偶函数
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The dual function demands to aeration devices for oxidation ditch are clarified and the mechanism of both stirring and flow driving of self priming jet aerator are described.
阐明了氧化沟对曝气设备双重功能的要求； 论述了自吸式射流曝气器发挥搅拌推流作用的机理；
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