用LB1405 LB1415作直流電平指示
直流電平指示="" 用lb1405="" src="/images/21ic_nopic.gif" data-src="21c8hyZE0tnXmwFKArpFNVdjreD7gBBkRWmqSB7YFfVRjeQS+y5mi0TL12c973TzJMxS2+4ZybbU8EHTScmM5d3zVjqdnpKNVbl+qA7XFRFTlsbzx/c41xgqvr/Mcw" class="delay_img" alt="用LB1405 LB1415作直流電平指示" />