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科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。

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obstacle clearance obstacle clearance box obstetric obstetrical analgesia obstetric forceps
obstetrician obstetrics obstipation obstructed stream obstruction
obstruction beacon obstruction buoy obstruction light obstruction marker obstruction moraine
obstruction to vision obstructive atelectasis obstructive dysmenorrhea obstructive emphysema obstructive glaucoma
obstructive hydrocephaly obstructive jaundice obtund obturating cup obturation
obturator obturator artery obturator foramen obturator membrane obturator nerve
obturator pad obturator spindle obtuse obtuse angle obtuse bisectrix
obtuse triangle obvallate obvolute occasional fog signal occasional light
occidental occipital arch occipital artery occipital bone occipital condyle
occipital crest occipital ganglion occipitalia occipital lobe occipital pole
occipital protuberance occipitofrontalis occiput occluded cyclone occluded front
occluded gases occluding junction occlusal disharmony occlusion occultation

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