Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/91e5a2b774992e729218ed8aaa6980b2.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 alloy steel wire rod例句_alloy steel wire rod英汉例句_alloy steel wire rod双解例句_食材铺反向词典
Properties of new type alloy spring steel D701 is studied by controlled rolling process on high alloy steel wire rod and bar mills . 通过高合金钢棒线材连轧机的控制轧制工艺研究了新一代合金弹簧钢D70 1的力学性能。