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平面的; 地面的; 在同一水平面上的 | |||
在同一水平面上 | |||
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在地表面 | |||
在同一平面上 | |||
铁路等交叉在同一水平面上 |
at-grade : 33 phrases in 13 subjects |
Architecture | 1 |
Automobiles | 3 |
Bridge construction | 2 |
Communications | 1 |
Construction | 1 |
Economy | 1 |
Finances | 2 |
General | 2 |
Management | 1 |
Oil and gas technology | 1 |
Rail transport | 6 |
Technology | 10 |
Transport | 2 |