Mexican cookery is economical, she says. Nothing goes to waste.“墨西哥的烹调注重俭省，”她说，“任何东西都不会浪费。”Fans of electric cars say they are clean, quiet and economical.电动汽车迷们说，电动车清洁、无噪音而且经济。It is economical to run and ecologically sou...
为克服间接反映发电机功角的传统失步保护所存在的问题,介绍了一种利用发电机调速系统来直接测量发电机功角的方法.In order to avoid the problems by traditional out of step protections based on measurement - angle.最后,根据失步中心的分布情况, 利用图论的思想实现了文中的动态解列方案.After the identification of osc...