求翻译：乙方每一阶段延迟履行日期未超过10日历日并且总延迟履行日期未超过30日历日的，每逾期一天，乙方应按相应工作包价格的1‰（千分之一）支付违约金，累进计算。是什么意思？

B at each stage of delay in performance to date not more than 10 calendar days and the total delay in the fulfill date not more than 30 calendar days for each day overdue, Party B shall be the price of the corresponding work package 1 ‰ (one-thousandth) payment of liquidated damages progressive calc

Party B shall each phase delay in the discharge date is not more than 10 calendar days and the total delay in the discharge date is not more than 30 calendar days overdue, and each day, Party B shall press the appropriate work-packages 1 per 1,000 of the price (1000 AM) to pay a penalty to Dar-es-Sa

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Str delayed implementation date is within the 10th calendar day of each phase and the total delay to fulfil does not exceed the 30th calendar day, each overdue day, b should be 1 ‰ of the corresponding work package price (1 per thousand) to pay liquidated damages, progressive calculation.

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