总体规划布局

环境背景特色

功能关系分析

体形空间组合，

IrDA

ZigBee联盟

IEEE 802.11b

IEEE 802.11a

    Overseas Visitors Club Membership is open to young people ( aged 25 or under ) from all countries. Temporary accommodation is availabe at reduced rates for members. The club organizes a wide variety of activities, including parties, discos, visits to theatres, and excursions to places of interest in the Berkbridge area. These activities are free or offered at low prices. The club has a centre for assisting overseas visitors and students find temporary and part-time work. The center has a job database, and fax, copier and computer facilities availabe for members. For more information, telephone 81—03277841

Schiller Center Set up by the German community in Berkbridge, the Center provides German language and culture classes for foreigners. It also offers accommodation for Europeans aged 18—30. The Center also runs an advice service to help members with visa, work permit and general welfare information. Membership: 30 pounds a year, plus five pounds per month.

YMCA / YWCA Two adjoining buildings----one for men ( YMCA ); one for women ( YWCA ). Weekly groups are organized for photography, art, drama and dancing. There are squash and tennis courts in each building. Both buildings share a swimming pool. The Card Room offers playing card and chess facilities. Hours: Weekdays 8:00—23:00   Weekends 10:00—20:00 Membership fees: Aged 16—27, 15 pounds per year, plus 50 pence per visit. Aged over 27, 20 pounds per year, no extra charge per visit.

Outdoors Club This club organizes a wide range of open-air activities, including mountain climbing, hiking, horseback riding, canoeing and skiing. Membership is open to all, but physically fit young people are especially welcome. Membership: 25 pounds in the summer ( April—September ), 50 pounds in the winter ( October—March )

Students Club This club is open to all students, whether domestic or overseas. The club building has bars, restaurants, swimming pool, gymnasium, TV lounge and sauna. There is no membership fee; just show your student card at the door. Opening hours: Weekdays 8:00—23:00, Weekends 9:00—20:00.

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错误

时限信号为能量信号。

在时间间隔无限趋大的情况下，周期信号、直流信号是功率信号。

非周期信号可能是能量信号，也可能是功率信号。

信号必须属于能量信号和功率信号中的一种。