把句子补充完整。
兴高____ 不____思索 没____打____
____有____有 沉默____ 举世____
____湖____海 恍然____ 鸦雀____
一砝码和一轻弹簧构成弹簧振子,图1所示的装置可用于研究该弹簧振子的受迫振动.匀速转动把手时,曲杆给弹簧振子以驱动力,使振子做受迫振动.把手匀速转动的周期就是驱动力的周期,改变把手匀速转动的速度就可以改变驱动力的周期.若保持把手不动,给砝码一向下的初速度,砝码便做简谐运动,振动图线如图2所示.当把手以某一速度匀速转动,受迫振动达到稳定时,砝码的振动图线如图3所示.若用T0表示弹簧振子的固有周期,T表示驱动力的周期,Y表示受迫振动达到稳定后砝码振动的振幅,则( )
Bayfield Shopping Coupons(优惠券)
6 Hours free parking
If you spend $100 or more in our stores you will receive six hours of free parking. Take this coupon to the service desk on level 4 to stamp(盖章)!
Buy one, get one free
Buy one shirt or tie at Daniel's Menswear, and get another shirt or tie of the same value free.
10% Off
Show this coupon at the Book Store to get a 10% discount(减价)on any books you buy. We have lots of books to choose from, including children's books, novels and travel guides. You're sure to find something that you will enjoy.
Free soft drink
Buy any meal for at least 6% off at Mike's Café', and receive a free soft drink. We serve the best hamburgers and snacks in the mall. Come in and try our delicious meals and our excellent service. You won't be disappointed!
Half-price movie tickets
Buy any full-price movie ticket on Tuesday or Wednesday, and you can buy a second ticket for a friend for only a half price. The latest movies are all here.