semisteel
n. [材] 半钢;钢性铸铁
n.[冶]低碳铸铁,钢性铸铁,半钢
barothermograph dinoflagellate emblemize quart rockfish tectonomagnetism unnecessarily下载迅蛙App
n. [材] 半钢;钢性铸铁
n.[冶]低碳铸铁,钢性铸铁,半钢
barothermograph dinoflagellate emblemize quart rockfish tectonomagnetism unnecessarily