多佩尔杜罗氧乙炔焰表面淬火法的英文

doppelduro process

• 多:    many; much; more
• 佩:    wear
• 尔:    you
• 杜:    birch-leaf pear a ...
• 氧:    oxygen
• 乙炔:    ethyne; acetylene
• 焰:    flame; blaze
• 表面:    surface; superfici ...
• 淬火:    quench; quenching; ...
• 法:    law