Multiple V-ring packing, combined with live loading, maintains packing compression under high-cycle and severe service applications.

多重V形环填料，组合动负载，维护填料压缩，适用于使用频率高，环境严酷的应用场合。

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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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The internal force produced in live load is calculated by manual loading method.

活载产生的内力采用手工加载的方法计算。

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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)