k NN移动对象kNN查询kn.字母kk-subdomination number符号k-子控制数k-edge colorable graph[计] k边可着色图Khitan-Western Xia War契丹-西夏战争(1044-1050)Khartoum Central Foundry喀土穆中央铸造厂K utilization efficiency钾素利用效率K fertilizer application施钾Kfm Temple -Morning-功夫人神殿 -早晨-Kfm Temple -Red Rain-功夫人神殿 -红雨-K-theoretic operation K理论运算K arhunen loeve transform光学相关识别