您要查找的是不是：
- 继发孔ASDAtrial septal defect
- 冲孔punching
- 螺孔screw
- 内孔endoporus
- 人孔manhole
- 继发secondary
- 贫血,继发Anemia/secondary
- 安装孔open holes
- 继发原发性second primary
- 圆孔round orifice
- 继发变应素secondary allergen
- 螺纹孔tap hole
- 次要的，继发的secondary
- 排水孔osculum
- 缩孔shrinkage cavity
- 次级，继发的，第二的secondary
- 沉孔counter bore
- 继发于心梗后的冠心病防治Secondary prevention of coronary heart disease following myocardial infarction
- 继发于重症脑病及颅内感染者预后差。Conclusion: Hypoproteinemia is closely related to the onset of EH.
- 螺栓孔bolt hole
