Kna假名Knn.海里(努森数)knurled collar轧花垫圈knurled capnut滚花帽螺母knokout system淘汰制knuuckle press曲柄连杆式压力机Knopf's method基因敲除knochenleitung(德)骨导听力Knipperdolling克尼佩尔多林kndwledge base知识库knurled enamel[医] 结节釉质knifing socket插刀式插头座