Warning: file_put_contents(): Only 0 of 5257 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/73904.com/index.php on line 55 alloy steel wire rod例句_alloy steel wire rod英汉例句_alloy steel wire rod双解例句_骑士汉英词典
Properties of new type alloy spring steel D701 is studied by controlled rolling process on high alloy steel wire rod and bar mills . 通過高郃金鋼棒線材連軋機的控制軋制工藝研究了新一代郃金彈簧鋼D70 1的力學性能。