The engine - feed system interface is at the turbopump inlet flanges.發(fā)動(dòng)機(jī)與供應(yīng)系統(tǒng)的交界是在渦輪泵的進(jìn)口法蘭盤處.The web and flanges of the main girders were fabricated from ASTM A 441 steel.主梁的腹板和翼緣用ASTMA441鋼制造.During fabrication slots for...