For improving our highway bridge design, the authors refer to two new specifications from UK and USA, and raise 6 problems for discussion:1. Normal and special traffic live loading;

为使公路桥设计更能适应发展趋势，通过参考英、美两本新桥规，提出所需明确的6个问题：①常规和特殊活荷载；

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To answer your queries, loading time from the live tile menu to the top tweets page above is approximately three seconds, while scrolling is basically identical to the perfection available on WP7's own apps.

ENGADGET: Official Twitter app for Windows Phone 7 goes live (update: hands-on)