词族 · rotation
词形变化
派生词
英语词源
- rotation (n.)
- 1550s, from Latin rotationem (nominative rotatio) "a turning about in a circle," noun of action from past participle stem of rotare "turn round, revolve, whirl about, roll," from PIE *ret- "to run, roll" (see rotary).
权威例句
- 1. Within the project, trees are selectively cut on a 25-year rotation.
- 按照这个计划，将以25年为一个轮伐期对树木进行有选择的砍伐。
- 2. the diurnal rotation of the earth
- 地球的周日自转
- 3. the daily rotation of the earth on its axis
- 地球每天的自转
- 4. Crop rotation helps prevent soil erosion.
- 农作物轮作有助于防止水土流失.
- 5. By using the lattice - rotation model, the screw and edge dislocation densities of the samples were calculated.
- 通过使用晶格旋转(Lattice-rotation)模型拟合, 计算出样品的螺位错密度和刃位错密度.