天线增益一般常用dBd和dBi两种单位。二者之间的换算关系是:0dBd=()dBi。A.-2.15B.-1C.1D.2.15的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷题,以提高学习效率,是学习的生产力
dB(dipole) – the forward gain of an antenna compared with a half-wave dipole antenna. 0 dBd = 2.15 dBi dBiC dB(isotropic circular) – the forward gain of an antenna compared to a circularly polarized isotropic antenna. There is no fixed conversion rule between dBiC and dBi, as it depend...
All environment variables used by the DBI or by individual DBDs begin with ""DBI_"" or ""DBD_"". The letter case used for attribute names is significant and plays an important part in the portability of DBI scripts. The case of the attribute name is used to signify who defined the ...
If you're used to just throwing debugging messages like huge stacktraces into your logger, some databases (Sybase's DBD!!) may surprise you by choking on data size limitations. Normally, the data would just be truncated to fit in the column, but Sybases's DBD it turns out maxes out a...
xerces-c-2.8.0-fix-narrowing-conversion.patch xerces-c-2.8.0-osx106.patch xerces-c-toolfile.spec xerces-c.spec xrootd-4.0.4-0001-XrdClient-Changes-to-allow-for-Fedora-rawhide-c-11-c.patch xrootd-toolfile.spec xrootd.spec xz-bootstrap.spec xz-toolfile.spec xz.spec yaml-cpp-toolfile...