sharpening technique by differentiation英 [ˈʃɑːpənɪŋ tekˈniːk baɪ ˌdɪfəˌrenʃiˈeɪʃn]美 [ˈʃɑːrpənɪŋ tekˈniːk baɪ ˌdɪfəˌrenʃiˈeɪʃn]【计】微分锐化技术计算机
