行程 1.(路程) route or distance of travel; distance of run; length of travel; distance travelled; journey; flight 艰难的行程 hard journey; 漫长的行程 long route; 行程五千多公里 travel over 5,000 kilometres; 一小时的行程 an hour's march; 这将是一整天的行程。it will make a full day's march.2.[机械工程] stroke; throw; travel 活塞行程 piston travel; 滑枕行程 ram stroke3.[电学] range
垂直 perpendicular; vertical; squareness; verticality; perpendicularity 两线垂直相交。the two lines meet at right angles. 设 ab 垂直于 cd。let ab be perpendicular to cd. 当表面与射线垂直时,射线的强度最大。when a surface is perpendicular to the rays, their intensity is at its maximum