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| block mark; beginning marker; initial marker; initial mark; block marker | |||
| beginning-of-information marker (auf einem Magnetband) | |||
| beginning mark (Magnetband) | |||
| check mark | |||
| beginning mark; beginning-of-information marker; BIM | |||
| start sentinel | |||
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Anfangsmarke : 4 短语, 1 学科 |
| 信息技术 | 4 |