The work hardening is present on the surface of audio heads during the wear process.
磁头在磨损过程中表层有冷加工硬化现象。
DP steel has better work hardening ability while TRIP steel has better bake hardening ability.
D P钢拥有更加优良的加工硬化能力，TRIP钢则具有较为理想的烘烤硬化能力。
DP steel has better work hardening ability while TRIP steel has better bake hardening ability.
D P钢拥有更加优良的加工硬化能力，TRIP钢则具有较为理想的烘烤硬化能力。
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