The possibility of direct formation of film at surface has been discussed.
提出了直接成膜的可能性。
A heat treatment is carried out in vacuum after the formation of the thin film.
氮化铁薄膜形成后，在真空中进行热处理。
Enamel, the formation of protective film, to make your teeth more strong, healthy.
珐琅质，形成保护膜，使您的牙齿更坚固，健康。
Enamel, the formation of protective film, to make your teeth more strong, healthy.
珐琅质，形成保护膜，使您的牙齿更坚固，健康。
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