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选材规范、标准演练;循序渐进、梯度提升;题量丰富、有效提高;技巧同步、一语中的;缩略速记，全面覆盖。 注意直接听写正文 Lead time is the period between a customers order and delivery of the final product. A small order of a pre-existing item may only have a few hours lead time, but a larger order of custom-made parts may have a lead time of weeks, months or even longer. It all depends on a number of factors, from the time it takes to create the machinery to the speed of the delivery system. Lead time may change according to seasons or holidays or overall demand for the product. Manufacturers are always looking for ways to improve the lead time on their products. Lead time can mean the difference between making the sale and watching a competitor sign the contract. If a company can deliver the product weeks ahead of the competition, it stands a better chance of receiving future orders. Because of this, management and labor teams routinely hold meetings to discuss lead time improvements. | 
