Increased ASD awareness and access to diagnostic services surely account for a significant proportionof the increase, and this is indeed a sign of progress.
当然，这种激增的重要原因是对asd的了解的增加以及得到诊断服务的增加，因而是真正的进展的迹象。
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To provide intelligent instruments with the cheap interface of the standard current sign, the RC low pass filter is used for producing a voltage signal which is proportion to PWM's duty rate from PWM.