如果你的狗狗体型不大，平常也比较适应在航空箱里活动，那么出行时这样一款宠物箱就足够满足它的要求。结实耐用的尼龙面料，侧面的透气......

摘 要： 作者基于英语学习者和英语本族语者语料库的研究，采用中介语对比分析的方法，对比分析了中国英语学习者与英语本族语者的holida......

In this note, we consider an M/G/1 retrial queue with server vacations, when retrial times, servicetimes and vacation ti......

This paper studies the operating characteristics of an M/G/1 queuing system with a randomized control policy and at most......