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- Parallel lines converge at infinity. 平行线永不相交。
- A pair of horizontal parallel lines drawn across a shield. 盾形纹章上的横条纹画在盾形纹章上的两条水平的平行线
- Analyzes the stochastic ergodicity and sensitivity of initial value of chaos model, proposes the chaos pseudo parallel genetic algorithm (CPPGA) based on multiple populations. 摘要剖析了混沌模型的随机性、遍历性和初值敏感性的特点，提出了多种群伪并行混沌遗传算法。
- Analyzes the stochastic ergodicity and sensitivity of initial value of chaos model,proposes the chaos pseudo parallel genetic algorithm(CPPGA) based on multiple populations. 仿真结果表明,混沌伪并行遗传算法比伪并行遗传算法和简单遗传算法具有更快的收敛速度和更高的最优解搜索成功率,可对火力分配进行优化。
- He proved the existence of parallel lines. 他证明了平行线的存在性。
- A family of parallel lines cut the conic. 有一组平行线与圆锥曲线相交。
- Arrangement or position in a straight line or in parallel lines. 直线排列直线或平行线的排列或位置
- The parallel lines appear to diverge. 这些平行线像是岔开了。
- Will two parallel lines hand over to order? 两条平行线会有交点吗?
- PARALLEL LINES MEET AT INFINITY. 平行线永远不会相交。
- Parallel lines indicates a break in continuity. 平行线表示连续的中断。
- Parallel lines, by definition, never join. 根据定义，平行线永远不会相交。
- He drew a series of parallel lines. 他画了一组平行线。
- Parallel lines are lines that never join. 平行线是永不相交的线。
- He first drew a series of parallel lines. 他先画了好些平行的线。
- There is no converging point of two parallel lines. 两条平行线是不会有交汇点的。
- Our careers seem to run on parallel lines. 看来我们的事业是在齐头并进。
- An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines. 摘要构建了一个纬线表象为平行于赤道的直线，经线表象为对称于中央直经线的双曲线，且面积没有变形的投影集合，并得到一组概括公式。
- the pseudo parallel genetic algorithm 伪并行遗传算法
- A compound pen draws a compound line made up of parallel lines and spaces. 复合钢笔绘制由平行直线和空白区域组成的复合直线。
