英 [ ɪntəvl] 美 [ ɪntərvl] n.间隔;休息时间;(数学)区间;(音乐)音程 (名词) [c]间隔a period of time between events, etc. [c]幕间休息s ch a period of time between the parts of a play, concert, etc. 用作名词 (n.) he comes back to see s at reg larintervals. 他每隔一段时间就回来看看我们. the properintervalssho ld be maintained between vehicles. 车辆之间应保持适当的间距. the performance r ns 2 ho rs 30 min tes incl ding aninterval. 整个演出2小时30分,包括中间休息. these eq ations areintervallinear eq ations. 该控制方程是线性区间方程组. this paper considers the nonlinear programming problem ofintervalparameters. 摘要讨论了区间参数非线性规划问题.