問答題
壓力容器受壓原鋼應(yīng)當采用是氧氣轉(zhuǎn)爐或者電爐冶煉的鎮(zhèn)靜鋼筆還應(yīng)當
壓力容器受壓原鋼應(yīng)當采用是氧氣轉(zhuǎn)爐或者電爐冶煉的鎮(zhèn)靜鋼筆還應(yīng)當