A eigenspace-based source number estimation was presented.It projects the estimated covariance matrix of array signal into signal eigen-subspace and noise eigen
人体植入物用钴-铬合金美国卡彭特技术公司新近开发成功一种医疗用植入物用无磁钻一铬-钼合金,其典型的化学成分是:Co-26Cr—6Mo—1Si-1Fe-1Mn-1Ni-0.5W-0.5Cu-0.18N-0.05C-0.015P-0.015S,该合金制品...
Cobalt-chromium alloy for human implant