Hair conference announcement wants as far as possible some earlier , so that make personnel attending the meeting receives announcement hind , have enough time prepares and hurry to an assembly room , also facilitate meeting wu personnel arranges the car of the return trip , boat , airline ticket 发会议通知要尽量早些，以便使与会人员接到通知后，有充足的时间预备和赶到会场，也便于会务人员安排回程的车、船、机票。
There is also green minibus 309m running between the tsing yi airport railway station and the lantau link visitors centre every saturday , sunday and on public holidays . the service departs the tsing yi station from 9 : 30am to 5pm and from the visitor s link from 10am to 6 : 30pm . the minibuses run every 60 minutes and cost hk 7 for a single journey ticket 逢星期六日及公众假期，您亦可乘搭309m线绿色小巴来往青衣地铁站和青屿干线访客中心，每60分钟一班，由上午9 : 30至下午5 : 00在青衣地铁站出发，回程的尾班车于下午6 : 30在青屿干线访客中心开出。
In this paper , dynamic stability of parametrically excited flexible cam - follower system on the weakly nonlinear condition is investigated by using the combination of both the method of multiple scales and the technique of fourier series expansion . the equations of approximate transition curves in the plane of the dimensionless frequency and excitation ( amplitude ) parameter that separate stable from unstable solution are derived 随后，本文采用多尺度法并结合fourier级数展开，分析了不同的凸轮从动件运动规律和不同的凸轮的升程、停程以及回程的时间分配规律下，无间隙的周期时变凸轮系统模型的稳定性，获得了各种规律下的凸轮系统的稳定区间图。
