2、实用场景例句：the interval oc is known as the domain of dependence.
3、区间oc叫做相关域。
4、辞典例句：let oc be the bisector of angle aob.oc为aob的角平分线。finally, removing the operating characteristic ( oc ) curves for on - line sampling and inspection.最后, 取消 在线 抽样和检验操作特征曲线 ( oc )。