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| 光学标记阅读器; 光学标记阅读器它能阅读经过填涂的信息卡，把信息输入计算机 | |||
| 光字符阅读器 | |||
| 光标阅读器; 光学指示读出器 | |||
| 光字符阅读机; 光学标志阅读器; 光标阅读机 | |||
| 光学标记阅读机 | |||
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| 光字符阅读机; 光学标志阅读器; 光标阅读机 | |||
| English thesaurus | |||
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| OMR (Fax) | |||
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optical mark reader : 7 phrases in 3 subjects |
| Chemistry | 1 |
| Electronics | 3 |
| Technology | 3 |
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