等重力线 [力] isogal ; isogam ; [测] isogriv
正常重力线 [测] normal gravity line
重力等差线 [力] isogams
磁力线重联 magnetic reconnection ; [物] reconnection of magnetic field lines
重力曲线 weigh curve
或磁力线重联 magnetic field line reconnection
重力值曲线图 drift curve
重力基线 [测] gravimetric baseline ; gravity base
重力基线场 base line field of gravity
论述了在海上进行天文定位时以重力线作基准直接测定天体顶距的原理和方法。
The paper expounds the principle and the method of measuring zenith distance for celestial positioning based on the direction of gravitational force line.
结论单侧臀肌挛缩症伴骨盆倾斜，多由臀中肌、臀小肌挛缩带引起髋关节外展畸形导致负重力线的改变而致病。
Conclusion gluteus medius and gluteus minimus could result in coxae abduction malformation and alteration of weight line, leading to pelvic obliquity.
通过综合分析，讨论了不同节段有关角度的差异与重力线，脊柱曲度大小，方向的关系以及在活动节段中的机能意义。
According to the observation and measurement, we discussed the functional significance of these differences of relative angles at different vertebral level.
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