用LB1405 LB1415作直流电平指示
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直流电平指示="" 用lb1405="" src="/images/21ic_nopic.gif" data-src="e819GhbG1kStGzvBzaHGDwHavocfK4TUW5PNeR0sK9lugjC/hD2vLmE1ueMqgW8U0LsYY/0ghsEtbIGVRDW6KQkXGL4P2ngO9lkTPJx7WUDG0UTkn7fgAXWxZd+g6A" class="delay_img" alt="用LB1405 LB1415作直流电平指示" />