Kinematics and dynamics of mechanical systems including rigid bodies in plane motion.机械系统的运动学与动力学包括刚体的平面移动.The kinematics phase configures of different configurations are shown and analyzed.做出不同条件下,不同构态的运动相图,最后对相图做出分析.De...
Police were periodically patrolling the area.警察定时在这一地区巡逻。Police are patrolling the major approach roads to the stadium.警察正在通往运动场的主要道路上巡逻.I saw women patrolling the streets with rifles on their backs.我看到妇女背着枪在街上巡逻....
玫瑰的叶子因为闹虫害而卷边了。The rose leaves have curled because of an attack by grubs.我们必须把席子的边粘住,免得卷边.We must glue the mat down at the edges to stop it curling.一般有三或四个滚边的或卷边的锥形杯.There are usually 3 or 4 conical cups having rolled or...