穿透辐射穿透輻射

chuān tòu fú shè

Meaning

penetrating radiation

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Characters

穿chuānto drill, to pierce; to dress, to wear穴牙透tòuto pierce, to penetrate, to pass through; thorough辶秀辐fúray, spoke车畐射shèto shoot, to eject, to emit身寸