The rule forces them to shut down a variety of high margin profit centers and focus on safer, lowermargin businesses.
法则要求它们关闭各类高毛利中心，专注于相对安全和低毛利的业务。
2
The stress balance method aims at the girders' reasonable moment, getting the cable forces by balancing the stress in girder's upper and lowermargin.
应力平衡法以主梁弯矩合理为目标，通过主梁上下缘应力平衡来求得拉索索力。
3
The testing results about the use of new rail joint was introduced, which include the dynamic flexure stress of upper limb and lowermargin of joint bar, shearing stress of horizontally neutral axis.