Merck closed the regular hours trading day down 6% and Schering-Plough lost more than 11%.
当天交易日中，默克公司的股价下跌6%而先灵葆雅的股价跌幅超过了11%。
3
The objective was to design derivative state feedback controllers so that the closed-loop system was regular, impulse-free, and the closed-loop poles was to be placed in a given region.