a-c directional overcurrent relay 交流方向性超流断电器...two-directional polycondensation 二向缩聚...voltage and power directional re-lay 电压和功率方向性继电器...directional coupler 定向联结器...three tower directional antenna 三塔指向天线...voltage-directional relay 电压方向性继电器...two-tower directional antenna 双塔指向天线...bi-directional dialog 双向对话...directional reception 定向接收...four tower directional array 四塔指向天线列...end-on directional antenna 对端方向性天线...directional a.方向的...directional homing 定向复位...power directional relay 电力方向替续器...directional gain 单向增益...first-order directional focusing mass spectrometer 一级方向聚焦质谱计...directional comparision protection 比较方向保护...spectral directional reflectance factor 光谱方向反射因数...group directional characteristic 天线群指向特性...directional characteristics 定向特性...directional overcurrent protection 定向过流保护...
交流互动
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