黄铜是铜锌合金。Brass is an alloy of copper and zinc.车上装的食品是用铬合金做的.The trimmings on the car are made of chromium.工人在合金里搀了一点铜.The worker worked in a little copper with the alloy....
To assess the effectiveness of treatment of menisci injuries by arthroscope.目的探讨关节镜手术治疗膝关节半月板损伤的临床疗效.Methods: Using the arthroscope to treat 44 patients with tibial plateau fractures.方法应用关节镜监视下复位固定塌陷及分离移位治疗胫骨平台骨折44例.Obje...