目视观测

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visual observation〔名词〕目测,外部观察详细»

visual observation〔名词〕目测详细»

visual observation〔名词〕目视观察,目视观测详细»

visual observation目测，目视观察，直观研究法详细»

目视观测visual observation详细»

目视观测〔名词〕visual observation详细»

目视观测visual observation详细»

目视观测visual observation详细»