一级路面 Grade I Road
一级蒸汽旁路 first stage steam bypass
一级旁路系统 one-stage by-pass system
一级公路网 primary highway system
一级锁相环回路滤波端 First PLL loop filter
虽然她喜欢一路上结识有趣的人，可是依然感到做着一份比自己资格降一级的工作感到的沮丧。
While she enjoys meeting interesting people along the way, she still feels frustrated working a job that's a step down from her qualifications.
松阳黄上村中石砌的路，空隙处长满了青苔和野草，那一级级磨得光亮的石阶，是村民数百年艰辛的记印。
Songyang yellow stone village road in the space covered with moss and grass, the level of grinding polished stone, is the hundreds of years of hard imprint.
她们走上了左边的那条路，发觉置身在一条压根儿没有什么亮光的通道里，这通道不久就变成了一级又一级向下延伸的台阶。
They took the left hand way and found themselves in a passage that was hardly lighted at all and which soon began going down steps.
一级路，一般能适应按各种汽车（包括摩托车）折合成小客车的年平均昼夜交通量为10000～25000辆，为连接重要政治、经济中心，通往重点工矿区、港口、机场，专供汽车分道行驶并部分控制出入的公路。 根据中国现行的公路等级技术标准一级公路为供汽车分向、分车道行驶并可根据需要控制出入的多车道公路。 流量标准四车道一级公路应能适应将各种汽车折合成小客车的年平均日交通量15000-30000 辆 六车道一级公路应能适应将各种汽车折合成小客车的年平均日交通量35000-55000 辆。 一级公路的设计速度有100KM/H，80KM/H，60KM/H三种，为干线公路时，取100KM/H或80KM/H，为集散公路时取80KM/H或60KM/H。
应用推荐