Objective To assess the effect of ventricular synchronous pacing modes with different pacing site combination on cardiac work efficiency (CWE) of chronic heart failure in pigs.

目的探讨不同位点组合同步心室起搏模式对慢性心力衰竭心脏做功效率的影响。

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These two complimentary technologies give developers and Web site designers a powerful combination.

这两项免费赠送的技术为开发人员和Web站点设计人员提供了一个强大的组合。

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The NWS Web site features a handy on-line calculator for determining the heat index based on a combination of either temperature and relative humidity or temperature and dew point.

国家气象局(NWS)网站公布了一个方便的在线计算器便于大家基于温度和相对湿度或温度和露点的结合来计算炎热指数。

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What makes this incident so unique is the combination of the fake web site and the subsequent fake Shell Twitter account supposedly in response to the fake web site.

FORBES: Was Greenpeace's Shell Hoax Brilliant Or 'Villainous'? One Of The Guys Behind It All Speaks.

The study also said the "likely cause" of the quakes was an "unusual combination of geology at the well site" and said conditions which caused the minor earthquakes were "unlikely to occur again".

BBC: Hesketh Bank fracking rig protesters guilty of trespass

This kind of approach should not only yield better results, but could also help archaeologists to decide which combination of sensing technologies is best suited to the conditions at a particular site.

ECONOMIST: Archaeology: What lies beneath | The