ÐĵçͼÖÐQTCÊÇʲôÒâ˼? - ÓÐÎʱشð

QT¼äÆÚµÄÕý³£·¶Î§Îª0.32~0.44s£¬ÓÉÓÚÊÜÐÄÂÊÓ°ÏìºÜ´ó£¬¹Ê³£ÓÃУÕýµÄQT¼äÆÚÖµ£¬¼´QTc£¬QTc=QT/¡ÌRR£¬...


qtc¼äÆÚÈçºÎ¼ÆËã?

QTc¼äÆÚ:Bazetts¹«Ê½¸Ã¹«Ê½×î³£Ó㬼ÆËã·½·¨ÎªQTcB = QT/(RR^0.5)£¬RRΪ±ê×¼»¯µÄÐÄÂÊÖµ£¬¸ù¾Ý60³ý...


QTc¼äÆÚÊÇʲôÒâ˼?

ËüµÄ¼ÆË㹫ʽÈçÏ¡£µ±ÐÄÂÊΪ60´Î/·Öʱ£¬¼´QTc¼äÆÚµÈÓÚQT¼äÆÚ¡£ÆäÕý³£ÉÏÏÞΪ0.44s£¨Å®ÐÔΪ0.46s£©¡£


³¬µÍÒôÏäÖÆ×÷ - °Ù¶È¾­Ñé

ÒÔϹ«Ê½ÃܱÕÏäµÄÈÝ»ý¼ÆË㣺¡¡¡¡Ïä×ÓÈÝ»ý£ºVAS/£¨QTC/QTS£©£­1¡¡¡¡QTC¡¡Ò»°ãÈ¡¾ö0.70>×îºÃ¡¡¡¡Àý:Ïä×ÓÈÝ»ý4.2/(0.707/0.38) ...


Ôõô¿´Ðĵçͼ?Ëĸö½×¶ÎÊÇʲô?

ÆäÖÐÒ»ÖÖ¼ÆËã·½·¨ÎªQTc= QT /¡ÌRR¡£ QT¼äÆÚµÄÑÓ³¤ÍùÍùÓë¶ñÐÔÐÄÂÉʧ³£µÄ·¢ÉúÏà¹Ø¡£9¡¢PP¼äÆÚ¡£p-p¼ä...


ÐĵçͼµÄ±¨¸æʲôÒâ˼~

ËùÓг£ÓÃУÕýµÄQT¼äÆÚ(QTc),ͨ³£ÓÃbazett¹«Ê½¼ÆËã QTcµÈÓÚQTÓëR-Rƽ·½¸ùµÄÉÌ.¾ÍÊÇR-R¼äÆÚΪ60´Î/...


ÂòÁ˸öJBL GT5 12 12´çµÍÒôÀ®°È,ÇëÎÊÏäÌåÓ¦¸ÃÔõÑùÉè¼Æ?ÏäÌå...

ÒÔϹ«Ê½ÃܱÕÏäµÄÈÝ»ý¼ÆË㣺Ïä×ÓÈÝ»ý£ºVAS/£¨QTC/QTS£©�0�5£­1QTC¡¡Ò»°ãÈ¡¾ö0.70>×îºÃÀý:Ïä×ÓÈÝ»ý4.2/(0...


ÈçºÎ¿´¶®Ðĵçͼ?

5.QTc¼äÆÚ£º<440ms £¨QTcΪÐÄÂÊУÕýµÄQT¼äÆÚ=QT/¡ÌRR,ÁÙ½çQTcֵΪ440~460ms£¬>460msÅжÏΪQTÑÓ³¤...


Ê®¶þ´çµÍÒôÅÚÀ®°È¸ÃÓöà´óÏäÌå

µ¹Ïà¹Ü³¤¶ÈΪ£º 217mm µ¹Ïà¹ÜÄÚÖ±¾¶Îª£º 80mm ¸ÃÀ®°È²»Ì«ÊʺÏÃܱÕÏä¡£ÃܱÕÏäÈÝ»ý´óԼΪ48¹«Éý¡£²Î¿¼65x36x£¨20-32£©¡£ÒôÏä...


ÈçºÎ¼ÆËã±ß¼Ê³É±¾

TC=10+3Q²MC=d(TC)/dQ=TC¡®=6Q ³£ÊýµÄµ¼Êý=0 Q(x´Î·½)µÄµ¼Êý=xQ[(x-1)´Î·½]Ò»°ãµÄ³É±¾º¯Êý¶¼ºÜ¼òµ¥£¬Çó±ß¼Ê...


Ïà¹ØËÑË÷

ÈÈÃÅËÑË÷