He gives the example of how a carpenter will often know that a nail works better in certain situations and screw better in others.
他用了这样一个例子：木匠通常是怎么知道在什么情况下用直钉，什么情况下用螺钉的。
In addition, pedicle screw constructs appear to have a better ability to correct scoliosis in comparison with hooks and hybrid constructs.
此外，椎弓根螺钉方式较经钉钩固定和混合结构方式在纠正脊柱侧凸上有更好的优势。
Better effect is got when this algorithm is used in exploiting automatic program system for NC machining complicate screw.
此算法应用于复杂螺杆数控加工的自动编程系统开发中，取得了较好的效果。
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