n.旋轉(zhuǎn)；循環(huán)

The rotation of the earth round the sun takes one year. 地球繞著太陽旋轉(zhuǎn)要一年時間。

Walling under the rotation radius of crane boom is prohibited. 吊臂旋轉(zhuǎn)半徑下，禁止人行走。

The seasons follow each other in rotation. 四季循環(huán)交替。

The rotation of crops keeps the soil healthy and fertile. 谷物輪種使土壤保持了肥力和高質(zhì)。

The chairmanship of the committee changes in rotation. 委員會主席一職是輪流擔任的。

adj.回轉(zhuǎn)的；輪流的

輪作方式

旋轉(zhuǎn)不良

n.自動旋轉(zhuǎn)(自旋)

n.正轉(zhuǎn)

n.固有轉(zhuǎn)動