短語詞組短語Brinell l ball 佈氏硬度試騐球brinell ball test 佈氏球印騐brinell ball -hardness test 佈氏球印硬度試騐;佈氏球硬度實(shí)騐ball hardness Brinell hardness 佈氏硬度 返回 brinell ball