cyclern.周期计(循环控制装置)cyclen.循环；周期；自行车；摩托车v.骑自行车；(使)轮转；(使)循环cycle unemployment周期性失业cyclenes copolymer环烯共聚物cycle of oparation连续运转周期cycle irregularity回转不规则度cycle of parasites寄生虫生活周期cycle of annealing退火程序Cycle refrigerator循环制冷cycle of infection侵染循环cycle rate counter周期计数器cycle of detection检查周期