This article mainly gives us the proof of the simple defectivenumber theorem, and also introduces us some inferences of it.
给出了简亏量定理的证明，并介绍了它的几个推论。
2
The production of high production cost of new products at the beginning, the number of small, technology is not stable, less skilled, defective rate is higher, so the production cost is high.
生产成本高新产品刚开始生产时，数量不大，技术尚不稳定、不熟练，次品率也较高，因而制造成本较高。
3
Perfect to identify fiber content, lot or style number, and defective areas on fabric.