parallelismn.平行；相似parallelism in pipelining流水线并行性Parallelism of optic axes光轴平行性parallelism of optical axis光轴平行度parallelism of effluent ray光束平行性parallelism of Levi-Civita列维－齐维他平行性parallelism of mind and body身心平行论parallelism of multiprocessing多重处理的并行性parallelism of music and picture音画平行parallelism of subspecific cline亚种渐变群的平行现象, 亚种倾群的平行现象parallelism measuring instrument平行度测量仪

1. From the simulation result, straightness error is affected by guideway parallel, and the suitable pre-load can improve the error effectively.
   经由模拟结果得知，导轨圆轴平行度为影响直线度误差的主要原因，此外，适当的弹簧预压力能有效的减少直线度误差。