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front-to-back ratio
el.	方向性比; 天线方向性比
mech.	前后比
mil., air.def.	定向天线方向性比
oil	峰泡比 (气枪的振幅峰值与气泡振幅之比)
space	前后比 (天线辐射瓣的)
tech.	正反向比
telecom.	方向比; 前后比天线方向性
front-to-back-ratio
mil., air.def.	方向性比; 前后不一致比

front-to-back ratio: 1 phrase in 1 subject

Technology

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