词汇	itinerant electron
释义	itinerant electron 巡回电子
随便看	threshold criterion threshold cross threshold crossing height threshold crossing heighttch threshold cryptography threshold cryptology threshold cryptosvstem threshold cryptosystem Threshold distance threshold-distortion tradeoff threshold dividend threshold current threshold current density threshold current intensity threshold currents threshold curve threshold curved surface threshold data threshold database threshold decision threshold decision-making threshold decodable code threshold-decodable code threshold decoder threshold decoding