
Steel, Chrome Molybdenum [4140] Bars, Rods, And Forging Stock For Aircraft Application - Revision C Amendment 1
出版:US Military Specs/Standards/Handbooks

專家解讀視頻
Steel, Chrome Molybdenum [4140] Bars, Rods, And Forging Stock For Aircraft Application - Revision C Amendment 1
出版:US Military Specs/Standards/Handbooks
專家解讀視頻