词义：指精装书封壳的硬纸板与中径纸板之间的两个缝隙。中缝的作用主要是与书芯联结和易翻阅。
中缝核 raphe nucleus ; [解剖] rapheal nuclei ; nucleus raphe
前中缝骨 front center seam ; center front seam
背中缝 center back seam ; back seam
袖中缝 sleeve center line ; sleeve centre seam
中缝背核 DRN ; dorsal raphe nucleus ; [解剖] nucleus raphes dorsalis ; NRD
中缝大核 NRM ; [解剖] nucleus raphes magnus ; raphe magnus nucleus ; RMG
中缝漏齿 Middle Line Perforation Dropped
中缝隐核 nucleus raphe obscurus ; raphe nuclei ; raphe obscurus nucleus ; ROB
纵向中缝 longitudinal center joint
尸体被装入布袋中缝好后抛入河流之中。
我一把夺过报纸，在报纸的中缝，确实有这么一条启示，用蓝色的大字写着。
I snatched the paper in mid-wave. Sure enough, in big blue letters it said.
目的观察大鼠第三脑室、中脑水管及中缝背核内多巴胺能触液神经元的分布情况。
Objective To observe the distribution of dopaminergic cerebrospinal fluid-contacting neurons (CSF-CNs) in the third ventricle and the mesencephalic aqueduct of rat.
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