力线，是指力场中的一些想象的线，这些线上任 一点的切线指向该点上的场的方向，而穿过与场垂 直的单位面积的线数则代表该场的强度。
电力线通信 Power Line Communication ; PLC ; power-line ; Power-line Internet
电力线 [电] power line ; [电] electric line of force ; line of electric force ; electrical lines
磁力线 [电磁] magnetic line of force ; Lines of force ; line of magnetic force ; magnetic line
阻力线 Resistance line ; UPER ; line of resistance ; Resistance e line
压力线 pressure line ; resistance line ; line of pressure ; Line of action
电力线宽带 BPL
敏力线 Monitor Cable ; Inakustik
推力线 [力] line of thrust ; thrust line ; Line thrust ; axis of thrust
3) MR scan is a good means to measure PCA and CTA of the femur. It is better to measure PCA and CTA, make the rotational alignment of the distal femur certain before TKA.
MR是一种测量股骨后髁角及髁扭转角的较好方法，TKA术前最好通过MR测量个体的股骨后髁角及髁扭转角，确定股骨远端的旋转力线，以指导术中股骨截骨及假体定位。
参考来源 - 华南地区人工膝关节置换术截骨参数测量及其临床分析·2,447,543篇论文数据，部分数据来源于NoteExpress
实验还观察了物体表面颗粒状突起对表面摩擦力线的影响。
The effects of small grains set on the surface of prolate spheroid on SFL were also observed and analyzed.
此外，关于更佳的的下肢力线与长期疗效之间的关系尚缺乏长期随访的支持。
Moreover, no long-term follow-up was conducted to document the correlations between proper alignment and long-term outcome.
用改进的油流显示法研究和对比了层流和湍流状态下绕椭球流动的表面摩擦力线结构。
Structures of the skin friction lines (SFL) appearing on a prolate spheroid in laminar and turbulent flows were investigated and compared by using an improved oil-flow visualization technique.
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