It was safe and easy on mechanics, furthermore, it was more fit for physiological curvature than a common cervical tractionapparatus.
力学分析符合安全、省力的要求，而且较一般的颈牵引设备更适合颈椎的生理弧度。
2
To observe the value of clinical application about a novel cervical tractionapparatus that could recover cervical lordotic curvature.
观察一种新颖的，可以恢复颈椎前凸曲度牵引器的临床应用价值。
3
The adjustable cervical tractionapparatus has convenient carrying and use, low cost and physical appearance, and is suitable for being used in publics.