对我来说，信仰是一种硬化过程，一种精神的淬火。
Faith, to my mind, is a stiffening process, a sort of mental starch.
磁头在磨损过程中表层有冷加工硬化现象。
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。
The work hardening is present on the surface of audio heads during the wear process.
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