<tr id='6DHn9'><strong id='nU2yS'></strong><small id='4myBK'></small><button id='SmdLJ'></button><li id='AZjmw'><noscript id='MLnLR'><big id='nw5jr'></big><dt id='hh2RI'></dt></noscript></li></tr><ol id='6CUC9'><option id='K5iDX'><table id='k449L'><blockquote id='guv1w'><tbody id='MGpRE'></tbody></blockquote></table></option></ol><u id='GspjC'></u><kbd id='KuvdO'><kbd id='9fQoW'></kbd></kbd>
T表示真有效值测量，对非标准的正弦波，测量更准确。
2017-03-23
7193
