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).
双语例句
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。
来自柯林斯例句
2. the diurnal rotation of the earth
地球的周日自转
来自《权威词典》
3. the daily rotation of the earth on its axis
地球每天的自转
来自《权威词典》
4. Crop rotation helps prevent soil erosion.
农作物轮作有助于防止水土流失.
来自《简明英汉词典》
5. By using the lattice - rotation model, the screw and edge dislocation densities of the samples were calculated.
