The ball which hung the roof is compound pendulum.悬挂在墙上的钟来回摆动.Enclosed the folowsheet of Alltech two - chamber pendulum - type solution and dosing plant Continufloc.附:Alltech两箱摆式加药装置流程图.The political pendulum has swung i...
In education, the pendulum has swung back to traditional teaching methods.教育界又恢复了传统教学法。The ball which hung the roof is compound pendulum.悬挂在墙上的钟来回摆动.The familiar pendulum swing was to happen once more, and then stop.常见的钟...