There are a lot of quality problems in the process of corn thresher production which caused the product qualification rate dropped.
玉米脱粒机生产厂家在生产过程中存在着许多问题，导致产品的合格率下降，甚至有许多假冒伪劣产品。
After testing 640 welds, the once qualification rate reaches 99.5 %, that shows the welding process and method are effective and feasible.
按照所制订的焊接工艺和方法共焊接各种规格焊口640道，探伤一次合格率为99.5%，证明该焊接工艺和方法是可行的。
With the original process, the qualification rate of the liquation carbonide was only 75.
原工艺下液析碳化物合格率仅为75。
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