| 形 of first degree; of grade one; one-level; primary: |
| | 一级保养 first class maintenance |
| | 一级风 【气】 force 1 wind; light air |
| | 一级品 primes; firsts |
| | 一级抽样 primary sampling |
| | 一级代码 one-level code |
| | 一级公路 A road; arterial road; arterial highway |
| | 一级检验 first-order test |
| | 一级结构 primary structure |
| | 一级戒备 highest alert |
| | 一级市场 primary market |
| | 一级战备 first-degree combat readiness |
| | 一级交易商 primary dealer |
| | 一级自营商 primary dealer |
| | 一级方程式赛车 Formula One car |
