ÖлªÈËÃñ¹²ºÍ¹ú¹ú¼Ò±ê
˫Òô¶àƵʽ°´¼üµç»°»ú¼¼ÊõҪÇó GB 9034 88
Performance requirements of
pushbutton telephone with UTMT
±¾±ê¶Ô˫Òô¶àƵʽ°´¼üµç»°»ú¹æ¶¨ÁËһ°ãҪÇó¡£
±¾±êÊÊÓÃÓÚÆÕͨ?Q˫Òô¶àƵʽ°´¼üµç»°»ú(ÒÔϼò³Æ»°»ú)¡£
ʹÓû·¾³Ìõ¼þ:
ζÈ:һ10^-40 C
Ïà¶Ôʪ¶È:45Y,-95д
Æøѹ:86һ106 kPa

GBT 9034-1988 双音多频式按键电话机技术要求.pdf