Adoption of different selecting operation has direct effect on progressive process.
采用不同的选择操作直接影响着进化过程。
Objective To explore the effect of health education on the mental state of patients with time selecting operation.
目的探讨健康教育对择期手术前患者精神状态的影响。
Performance of flyback converter with DCM and CCM is compared , methods of selecting operation modes according to the load are pointed out.
比较了CCM和DCM模式反激变换器的工作情况，指出根据负载选择工作模式的方法。
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