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| observation against a bright background (field) | |||
| observation against a bright back ground (в микроскопии) | |||
| bright-field examination (под микроскопом); bright-field observation | |||
| bright-field technique (в микроскопии); bright-field work (в микроскопии); observation against a bright background (в микроскопии); observation against a bright field (в микроскопии); observation against a bright back field (в микроскопии) | |||