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mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">近期，我们å‘现了å½?/span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><a href="http://www.chenfeipower.com/product/"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'" lang="EN-US"><span lang="EN-US"><font color="#800080">电æºå˜åŽ‹å™?/font></span></span></a></span></b><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">ç£èŠ¯å·¥ä½œåœ¨è¾¾</span><span lang="EN-US"><font face="Times New Roman">MHz</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">频率时，剩余æŸè€—å·²å æ”¯é…地ä½ï¼Œé‡‡ç”¨ç»†æ™¶ç²’é“氧体已æˆåŠŸåœ°ç¼©å°äº†æ­¤æŸè€—的贡献。对</span><span lang="EN-US"><font face="Times New Roman">MnZn</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">é“氧体æ¥è¯´ï¼Œåœ?/span><span lang="EN-US"><font face="Times New Roman">MHz</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">频率出现é“ç£è°æŒ¯ï¼Œå½¢æˆäº†é“氧体的æŸè€—。最近有人æå‡?/span><span lang="EN-US"><font face="Times New Roman">[5]</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，当é“氧体的ç£å¯¼çŽ?mu;</span><span lang="EN-US"><font face="Times New Roman">i</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">éšæ™¶ç²’尺寸å‡å°è€Œé™ä½Žæ—¶ï¼?/span><span lang="EN-US"><font face="Times New Roman">Snoek</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">定律ä»æ˜¯æœ‰æ•ˆçš„，å³æ˜¯è¯´ï¼Œç»†æ™¶ç²’æ料显示出高的è°æŒ¯é¢‘率，因为å¯ä»¥ç”¨äºŽæ›´é«˜é¢‘率。å¦å¤–，对晶粒尺寸å°åˆ°çº³ç±³çº§çš„é“氧体æ料研究表明，在此频段还应考虑晶粒内畴å£æŸè€—ã€?/span><span lang="EN-US"><o:p></o:p></span></p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span lang="EN-US"><o:p><font face="Times New Roman"> </font></o:p></span></p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">所以一å°ç†æƒ³çš„</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><a href="http://www.chenfeipower.com/"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'" lang="EN-US"><span lang="EN-US"><font color="#800080">å˜åŽ‹å™?/font></span></span></a></span></b><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是相对于音频与工频å˜åŽ‹å™¨è€Œè¨€çš„。但由于高频的范围太广，所以è¦æ˜Žç¡®çš„划分是困难的。就此，我们å¯å°†å·¥ä½œé¢‘率在音频以上的å˜åŽ‹å™¨ç»Ÿç§°ä¸ºé«˜é¢‘å˜åŽ‹å™¨ã€‚事实上这ç§å«æ³•ä»ç„¶æ˜¯ä¸å¤Ÿä¸¥æ ¼çš„ã€?/span></p> <p> </p> </div> <div class="apage" id="showfenye"> <!--资讯分页:start--> <script type="text/javascript"> var pagecont=1; if(pagecont > 2) { var ss = new Cls_jsPage(1, 1, 5, "ss"); ss.setPageSE("helps-36791646301_", ".html"); ss.setPageInput("Page"); ss.setUrl(""); ss.setPageFrist("<a disabled='true'class='ob'>首页</a>", "首页"); 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