进而通过轨迹样本点分析的方式，得到统计平均的相邻平行截面间距。
Then the statistical average distance between neighboring parallel sections was acquired using the analysis of sample trace points.
只有在近轴光线条件下，平行光通过凸透镜才可近似聚焦于一点。
The parallel light rays of the prnicipal axis that approach a convex lens can converge to the focal point.
用钢笔的话你可以通过排线来制造明暗(画平行线)，交叉排线(平行线相交)，涂鸦，点绘或者其他时髦的笔触。
With a pen, you can shade by hatching (making parallel lines), cross-hatching (parallel lines crossing over parallel lines), scribbling, stippling, or making other funky little marks.
画条平行线通过这个点，你就会找到解题方法。
Draw a parallel through the point and you can find a solution.
通过不同温度条件下不同厚度、不同缺口取向含V形缺口试样进行3点弯曲试验研究，发现X70管线钢具有严重的各向异性现象，其在平行钢板表面方向和沿钢板厚度方向力学性能差异较大。
The effects of thickness and notch orientation on the toughness of X70 pipeline steel samples with V notch were investigated experimentally by use of the 3-point bending test at different temperature.
通过不同温度条件下不同厚度、不同缺口取向含V形缺口试样进行3点弯曲试验研究，发现X70管线钢具有严重的各向异性现象，其在平行钢板表面方向和沿钢板厚度方向力学性能差异较大。
The effects of thickness and notch orientation on the toughness of X70 pipeline steel samples with V notch were investigated experimentally by use of the 3-point bending test at different temperature.
应用推荐