cycledadj.循环的；周期性的v.骑自行车（cycle的过去式和过去分词）cyclen.循环；周期；自行车；摩托车v.骑自行车；(使)轮转；(使)循环cycle detector循环检测子cycle nitrogen氮循环cycle-cutset环割集cycle lifetime循环寿命cycled economy循环经济cyclecriterionn.循环判据cycle progress周期进展cycle notation[计] 循环记法cycle crushing循环式破碎cycle transfer[电] 循环传送