The polarity in which the first loudspeaker is coupled to the first-order crossover network is an inverse of the polarity in which the second loudspeaker is coupled to the crossover network.
第一扬声器与一阶分频网络耦合的极性是第二扬声器与分频网络耦合的极性的反相。
Thirty-one patients with migraine with aura received once-dailytonabersat or placebo for three months each (in random order)with a one-month washout between treatment crossover.
31位患有偏头痛先兆的病人接受了每日一次的托纳博沙治疗或每月清洗一次（随机顺序）持续三个月的安慰剂交叉治疗。
The optimum threshold determined by the theory of image segmentation is to be the crossover point of the fuzzy enhancement in order to enhance the contrast of image.
利用图像分割原理确定的最佳阈值作为模糊增强的分界点，完成对图像的对比度增强。
The optimum threshold determined by the theory of image segmentation is to be the crossover point of the fuzzy enhancement, in order to enhance the contrast of image.
利用图像分割原理确定的最佳阈值作为模糊增强的分界点，完成对图像的对比度增强。
The optimum threshold determined by the theory of image segmentation is to be the crossover point of the fuzzy enhancement, in order to enhance the contrast of image.
利用图像分割原理确定的最佳阈值作为模糊增强的分界点，完成对图像的对比度增强。
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