方法：采用改良骨盆倾斜度测量器结构的原理和测量方法与其它测量方法进行比较性研究。
Methods: Adopting constitutional principle and measurement method of improved pelvic inclination surveyor, compared with other measurement methods of pelvic inclination.
目的：了解骨盆倾斜度过大对分娩的影响。
Objective:To evaluate the influence of too large inclination of pelvis.
目的：探讨骨盆倾斜度过大产妇产时的临床表现和纠正机制。
Objective: To explore the clinical manifestation of excessive pelvic inclination and mechanism of its correction.
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