通过引入状态变换, 得到了一类降阶形式的状态估计问题.By introducing state transformation, a reduced - order state estimation form is achieved.介绍了异步电动机全阶数学模型的线性化和降阶的原理,并探讨了降阶模型的准确性问题.The accuracy of the linearized reduced order of induction motors...
He continued to mow the lawn and do other routine chores.他继续剪草坪，并做些其他日常杂务。She did her chores without prodding.她自觉地做完了家务。Everybody shares in the cooking chores.每个人都帮着做饭。...
Overcooked greens are my most vivid recollection of school dinners.在我对学校午餐的回忆中，印象最深刻的就是蔬菜总是炒过头。Eat your greens.把青菜吃掉。Greens and browns are typical of Ribera's palette.绿色和棕色是里贝拉的主色调。...
河流转向东流时河道大幅度变宽。The river widens considerably as it begins to turn east.洛特河的河道蜿蜒曲折。The Lot river follows a winding and tortuous course.富有浪漫气息的庄园和城堡俯瞰着蜿蜒的河道。Romantic chateaux and castles overlook the river's twisting ...