The paper analyzes main technical characteristics of this new-type head span OCS, and the construction technique are studied, a viable improvement scheme is offered.

本文分析了新型软横跨接触悬挂的主要技术特点，对施工技术进行了研究并提出了可行的改进方案。

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Medical breakthroughs hold out the prospect of living longer and healthier lives, with current life span norms set to be turned on their head, an expert on anti-aging said on Friday.

周五，一位抗衰老专家说，医学上的突破使人们有希望获得更长的寿命和更健康的身体，并且让目前生命的终点变为起点。

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He cited 21 head coaching jobs changing in a three-year span, which he said indicates owners are making the wrong hires regardless of race.

NPR: Black Ex-Coaches Say NFL's Rooney Rule Is Broken

That was Syracuse's fourth loss in a span of five games, a stumbling way to head into tournament play.

WSJ: Syracuse on to Final Four, beats Marquette 55-39