Most push-rod engines and some OHC engines have chains.
大多数推杆发动机和一些顶置凸轮轴发动机都有链。
The camshaft also fits inside the block, except on overhead-cam engines (OHC).
除了顶置凸轮（OHC）发动机以外，凸轮轴都安装在气缸体里面。
The changes of outer hair cells(OHC) were observed by scanning electron microscope.
扫描电镜观察外毛细胞形态变化；
The overhead camshaft (OHC) and combination valve spring structure are in common use in modern motorcycle gasoline engine.
近代摩托车用汽油机普遍采用顶置凸轮轴结构（OHC）和组合式气门弹簧。
Objective To study the variant stereociliary bundles of cochlear out hair cell(OHC)and their relationship with auditory function.
目的探讨耳蜗毛细胞静纤毛束变异与听功能改变的关系。
Under TEM, GABA-IR positive efferent endings, negative efferent endings and negative afferent endings could be seen on the OHC bases.
免疫电镜发现在外毛细胞底部有GABA - IR阳性的传出神经末梢及阴性的传入、传出神经末梢。
Objective To establish a practical model for Wistar rat cochlea organ cultivated in vitro and observe the effect of hypoxia on the inner hair cells(IHC) and outer hair cells(OHC).
目的：建立耳蜗器官体外培养模型，观察缺氧对体外培养耳蜗内毛细胞（IHC）及外毛细胞（OHC）的影响。
Objective To establish a practical model for Wistar rat cochlea organ cultivated in vitro and observe the effect of hypoxia on the inner hair cells(IHC) and outer hair cells(OHC).
目的：建立耳蜗器官体外培养模型，观察缺氧对体外培养耳蜗内毛细胞（IHC）及外毛细胞（OHC）的影响。
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