When the stock leading-time is a random variable, the leading-time and batch cooperation of supplier and buyer are researched.

将采购提前期视为随机变量，研究供需双方的提前期和批量合作。

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In the closing event, Shelly-Ann Fraser jumped out of the starting blocks and never trailed as she crossed the finish line in a world-leading time of 10.73 seconds.

VOA: standard.2009.08.18

This is a research by one of the leading researchers, one of the first researches in the area of positive emotions, Alice Isen And she showed, time and again, how feeling good is good for us and good for others, and it works the other way as well.

一位重要的研究者，积极情绪领域的首批研究者之一，进行了这个研究，Alice，Isen。,她反复证明，感觉好如何对我们和他人都有益，反之亦然。

哈佛公开课 - 幸福课课程节选

Yargeris Savigne of Cuba came out on top in the triple jump with a leap of 14.95 meters, while Spain's Marta Domnguez took the gold medal in the 3,000 meter steeplechase, with a world leading time of 9 minutes,7.32 seconds.

VOA: standard.2009.08.18

Chambers sealed his place in Doha by earning victory with a world-leading time of 6.50 seconds in Sheffield.

BBC: Harry Aikines-Aryeetey

Greene powered to a commanding victory in 48.12 seconds, lowering his own leading time in Europe this year with a new personal best.

BBC: European Athletics 2010: Welsh one-two in 400m hurdles

Bahrain's Maryam Jamal clocked a national record and world-leading time for 2005, winning the 3, 000m in eight minutes 28.87 seconds, covering the last lap in under a minute.

BBC: France's Christine Arron won the 100m in Oslo