ÎÊÌâÒÑ¿ªÆô
(ÆÕͨÎÊÌâ)
ÏÂÁй«Ê½ÄÄЩÊÇÕýÈ·µÄ£¿
A.10dBm + 10dBm = 20dBm
B.10dBm + 10dBm = 13dBm
C.10dBm + 10dB = 20dBm
D.10dBm + 10dB = 100dBm
ÇëÏêϸ½â´ð£¡£¡Ð»Ð»£¡£¡£¡
B.10dBm + 10dBm = 13dBm
C.10dBm + 10dB = 20dBm
D.10dBm + 10dB = 100dBm
ÇëÏêϸ½â´ð£¡£¡Ð»Ð»£¡£¡£¡
ÌáÎÊÕß: ³¤Í¤Íâ ÌáÎÊʱ¼ä: 2010-06-15
¸ü¶à
¹«Ê½
Ïà¹ØÎÊÌâ
• Õâ¸ö°æ±¾µÄ¿±²ìÉè¼Æ¹«Ê½ÊÇʲô 2019-05-26
• ͨÐÅÐÐÒµÍøÂçÓÅ»¯Çл»ÇгöÂÊ£¬Çл»ÇÐÈëÂÊÓй«Ê½Âð£¿ÔõôÇóÔõô¼ÆË㣿 2019-01-16
• ͨÐÅÐÐÒµÍøÂçÓÅ»¯ÓÐÄÄЩ¹«Ê½ÓÃʲôµØ·½£¬2Gµ¥Õ¾ÑéÖ¤ºÍ4Gµ¥Õ¾ÑéÖ¤ÓкÎÇø±ð 2018-12-21
• PB±íʾ¦ÑB/¦ÑAµÄË÷Òý,Ë÷ÒýµÄ¹«Ê½ÊÇʲô? 2018-07-08
• LTEÉÏÐй¦¿Ø¹«Ê½ 2017-09-11
• ¶ª°üÂʹ«Ê½ 2017-08-12
• ÒµÎñ̬LTEÍøÂçʱ³¤Õ¼±ÈµÄ¼ÆË㹫ʽ 2017-06-18
• ÇëÎÊPNÂëÓÐרÃŵÄÎóÂëÂʹ«Ê½Â𣿠2017-06-14
• ͨÐÅÐÐÒµÍøÂçÓÅ»¯Çл»ÇгöÂÊ£¬Çл»ÇÐÈëÂÊÓй«Ê½Âð£¿ÔõôÇóÔõô¼ÆË㣿 2019-01-16
• ͨÐÅÐÐÒµÍøÂçÓÅ»¯ÓÐÄÄЩ¹«Ê½ÓÃʲôµØ·½£¬2Gµ¥Õ¾ÑéÖ¤ºÍ4Gµ¥Õ¾ÑéÖ¤ÓкÎÇø±ð 2018-12-21
• PB±íʾ¦ÑB/¦ÑAµÄË÷Òý,Ë÷ÒýµÄ¹«Ê½ÊÇʲô? 2018-07-08
• LTEÉÏÐй¦¿Ø¹«Ê½ 2017-09-11
• ¶ª°üÂʹ«Ê½ 2017-08-12
• ÒµÎñ̬LTEÍøÂçʱ³¤Õ¼±ÈµÄ¼ÆË㹫ʽ 2017-06-18
• ÇëÎÊPNÂëÓÐרÃŵÄÎóÂëÂʹ«Ê½Â𣿠2017-06-14
ÎÊÌâ´ð°¸
( 3 )
ÕýÈ·´ð°¸£ºB
¹¦ÂÊÿÔö¼ÓÒ»±¶ ¾Í¼Ó3db ËùÒÔ´ð°¸ÊÇ13dbm
¹¦ÂÊÿÔö¼ÓÒ»±¶ ¾Í¼Ó3db ËùÒÔ´ð°¸ÊÇ13dbm
»Ø´ðÕߣº
wfwuxian
»Ø´ðʱ¼ä£º2010-06-15 06:24
6 4
¹¦ÂʼÓÒ»±¶£¬¼´ÔÚÔÊýÖµÉϼÓ3dB¼´¿É£¬ÊýÖµ¼Ó10£¬¹¦ÂÊΪԹ¦ÂʵÄ10±¶¡£¼´20dBmµÄ¹¦ÂÊÖµ(ÒÔW¼ÆËã)ÊÇ10dBmµÄ10±¶¡£±¾ÌâµÄ´ð°¸ÎªB¡£
»Ø´ðÕߣº
jinfeng_96
»Ø´ðʱ¼ä£º2010-06-15 07:47
3 7
ÕýÈ·´ð°¸ÊÇBºÍC
B´ð°¸Â¥ÉÏÒÑÓÐÕý½â¡£
C´ð°¸Ò²ºÜ¼òµ¥£¬´Ó¶¨ÒåÀ´¿´£¬dB¿ÉÒÔÀí½â³ÉÁ½¸ödBmµÄ²îÖµ£¬¸ù¾ÝdBm±¾Éí´ú±íµÄº¬Ò壬Á½¸ödBmµÄ²î¿ÉÒÔ±íʾΪ¹¦ÂÊÖ®²î¡¢µçѹ֮²î»òµçÁ÷Ö®²î¡£Òò´Ë20dBm-10dbm=10dB,Ò²¾ÍÊÇ10dBm+10dB=20dBm
B´ð°¸Â¥ÉÏÒÑÓÐÕý½â¡£
C´ð°¸Ò²ºÜ¼òµ¥£¬´Ó¶¨ÒåÀ´¿´£¬dB¿ÉÒÔÀí½â³ÉÁ½¸ödBmµÄ²îÖµ£¬¸ù¾ÝdBm±¾Éí´ú±íµÄº¬Ò壬Á½¸ödBmµÄ²î¿ÉÒÔ±íʾΪ¹¦ÂÊÖ®²î¡¢µçѹ֮²î»òµçÁ÷Ö®²î¡£Òò´Ë20dBm-10dbm=10dB,Ò²¾ÍÊÇ10dBm+10dB=20dBm
»Ø´ðÕߣº
Rophy
»Ø´ðʱ¼ä£º2010-06-15 14:03
8 7
ÈȵãÎÊÌâ
¸ü¶à¾«²Ê
ÁªÏµÎÒÃÇ - ÎÊͨÐÅר¼Ò | Powered by MSCBSC Òƶ¯Í¨ÐÅÍø © 2006 - |