Cycle Time: The length of time for any operation, from start to completion. In the new product development sense, it is the length of time to develop a new product from an early initial idea for a new product to initial market sales. Precise definitions of the start and end point vary from one company to another, and may vary from one project to another within the company. (See Chapter 12 of The PDMA HandBook 2nd Edition.)
周期:从开始到结束的运行时间。从新产品开发角度来讲，它是指从最初创意产生到新产品上市销售的时间。不同的公司，或同一公司的不同项目的起始定义时间都会有所不同。
