允许中断 meaning in English

enable interruption
enabled interruption

For the non - preemptive version , we present a new lower bound 6 5 which improves the known lower bound 1 . 161 . for the preemptive version , we present an optimal semi - online algorithm with a competitive ratio of 1 in the case that the total size is not greater than 4 , and an algorithm with a competitive ratio of 5 4 otherwise , while a lower bound 1 . 0957 is also presented for general case
本文的主要结果为：对不可中断的情况，我们给出了该问题的下界是6 5 ，从而改进了文献中的给出的结果1 . 161 .对可中断的情况，所谓工件加工允许中断，即加工过程中允许机器暂停某工件的加工，而改为加工另一工件。