| penyepuhan keras dalam udara | hardening in the air |
| penyepuhan keras dalam udara | |||
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| penyepuhan | plating, gilding |
| keras | hard, solid state, tight, not flexible, strong, gruff, hard, loud, stern, seriously |
| dalam | interior, inside, in, within, deep, thoughtful |
| udara | air, atmosphere, sky, air space, weather |