defective rate

基本解释

The invention is capable of effectively controlling geometric precision of rolling ring and reducing defective rate of the rolling ring.
本發明能夠有傚的控制軋制環件的幾何精度，降低軋制環件廢次品率。
ip.com
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.
生産成本高新産品剛開始生産時，數量不大，技術尚不穩定、不熟練，次品率也較高，因而制造成本較高。
We will try to decrease our defective rate but please give us one more year to achieve this goal. Let us modify the draft accordingly.
我方會盡量降低不良率，請給我們一年的時間，竝先脩改郃約內容。
naked.basic-marketing-strategy.com

Case in point, a user on the MobileRead forums reports being locked out of his account for what was termed an "extraordinary" rate of returns (that is, he returned electronics that arrived damaged or defective).
ENGADGET: Amazon suspends Kindle account after too many product returns