铁塔
iron tower
铁塔电阻
tower-footing resistance
铁塔天线
tower antenna
特性幅射
characteristic penetration length characteristic radiation
天然幅射
natural radiation
天线幅射电阻
antenna radiation resistance
同调幅射
coherent radiation
同轴幅射热计
coaxial bolometer
探察注射器
probe syringe
天线反射器
antenna reflector
调频发射器
frequency-modulated transmitter
投射器
projector; projectoscope
碎铁
bushelling
隧道铸铁圈
tunnel casting ring
羧高铁血红素
hematin
踏阶连接角铁
foot step fastening angle
钛磁铁矿
titanic magnetite
钛酸亚铁
ferrous titanate
钛铁
ferro-titanium
钛铁合金
ferro-titanium