Basalo巴萨洛basaladj.基础的；基本的basal neck fracture颈底骨折Basal fertilization基肥basal transcription基态转录Basal cell cocktail基底细胞鸡尾酒basal pepsin output基础胃蛋白酶排量basal encephalocele基底部脑膨出basal cell melanoma基底细胞黑素瘤basaloid mixed tumor基底细胞样混合瘤basal ophtalmoplegia颅底性眼肌麻痹basal plane distance基面距

1. A diaphragm in the plug body ruptures to allow the cement slurry to pass through after the plug reaches the landing collar.
   在塞体中的隔膜破裂，以便使水泥浆能在底塞到达止塞箍以后通过。