波瓣图1.6中的"前后比"（Front-Back Ratio）是一个重要的参数，它衡量了天线主瓣（前方辐射）与后瓣（后方辐射）的强度对比。理想的天线应该有较低的前后比，以保证信号主要集中在前方，避免产生越区覆盖和切换关系混乱，从而减少掉话的风险。通常，前后比在25-30dB之间被认为是较为理想的，推荐优先选择前后比为30dB的
front-to-back ratio 英 [frʌnt tu bæk ˈreɪʃiəʊ] 美 [frʌnt tu bæk ˈreɪʃioʊ]前后比；（定向天线的）方向性比; 方向性比；前后不一致比
网络前后比;比值 网络释义
The high ratio of front and rear directional base station antenna comprises a metal reflector and a plurality of radiating element module, the radiating element module mounted on the same side of the metal reflector, and in the same linear direction in the form of discrete metal reflector ...
front to back ratio正反向比 front to back slope前后坡度 front to back registration【电】 前至后的登记 front to back effect前后不一致的影响,前后影响 back to front ratio反-正比 back to front前后倒置 back front八字砖, 盖板砖 front back interference【计】 前后干扰 ...
front-to-back ratio 英文front-to-back ratio 中文【电】 前后比
The back-end ratio indicates what portion of a person's monthly income goes toward paying debts. Learn how to calculate them and how they are used in lending.
1.It also describes the working principle and relative acoustics performance of the tri-modal directional transducer, and gives the test results of directivity,transmitting voltage response,fore-and-aft amplitude ratio,efficiency,etc.描述了三模态换能器的工作原理和有关声学性能,给出了指向性、发射电压响...
The parameter σ is calculated via the ratio of the residual phase root mean squared (RMS) to the peak-to-valley value of the added aberration. λ is the wavelength. b, Performance comparison of the WWS and C-SHWS under different degrees of atmospheric turbulence (n = 70). In a ...
1) front-to-rear ratio 前后比 2) pre-post compatibility 前后比照 3) QIAN(front)/HOU(back) 前/后 4) qian and hou 前后 5) qian-hou 前-后 6) qian,hou 前、后 参考词条 前后一致手术前后前后测量绝经前后透析前后前后入路前、后弓骨盆前后前-后交会前后缘前后通风前后锥角辽甜3号回填注浆 ...