k NN移动对象kNN查询kn.字母kKhrushchev' s PeriodK lipsoluble vitamin脂溶性维生素K-shell ionization电离截面K-Cluster analysis聚类分析k/s value of dyes单位浓度K／S值K-electron capture[医] K电子俘获K - Mg Lamprophyre钾镁煌斑岩K- Mega- Ethemet千兆以太网Khalkhas nationality柯尔克孜族K-Ar geochronology钾氩测年法