| 单词 | 横截面 |
| 释义 | 〔ampere〕A unit of electric current in the meter-kilogram-second system. It is the steady current that when flowing in straight parallel wires of infinite length and negligible cross section, separated by a distance of one meter in free space, produces a force between the wires of 2 × 10-7 newtons per meter of length. 安培：米－千克－秒单位制中电流的单位，即在无限长且横截面极小的直流平行电线中流动的平稳电流，在自由空间中被一米长的距离隔开，在电线中间可产生每米2×10-7牛顿 〔horizon〕A specific layer of soil or subsoil in a vertical cross section of land.地层，岩层：处于土地的垂直横截面中的某一具体土层或次土层〔puncheon〕A piece of broad, heavy, roughly dressed timber with one face finished flat.半圆木料：由圆木料对剖成的横截面为半圆的木料 |
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