rotation
rotation
noun
[mass noun]
rotational
adjective
rotationally
adverb
语源
noun
[mass noun]
- the action of rotating about an axis or centre
旋转，转动
the moon moves in the same direction as the earth's rotation.
月球与地球旋转的方向一致。
[count noun]several solar rotations.
绕太阳转几圈。
■the passing of a privilege or responsibility from one member of a group to another in a regularly recurring succession
轮流，轮换
it has become common for senior academics to act as heads of department in rotation.
高级学者轮流担任部门领导已经很普遍。
■(亦作 crop rotation)the action or system of rotating crops
轮作，换茬
■(Forestry)the cycle of planting, felling, and replanting
(林)轮伐期（指栽种、砍伐和重新栽种的周期）
■[count noun](US)a tour of duty, especially by a medical practitioner in training
(美)（尤指实习医生的）轮流实习
■(Mathematics)the conceptual operation of turning a system about an axis
(数)坐标轴的旋转
■(Mathematics). another term for curl (in sense 2)
(数)。 同 curl (义项2)
rotational
adjective
rotationally
adverb
语源
- mid 16th cent.: from Latin rotatio(n-), from the verb rotare (see rotate)
考试词汇表
