The analysis shows that it is possible to make a CW missile have the ability to attack armed helicopters and balloon targets without sacrifices of original low-air performance through adjustment.

认为在原基础上加以调整，就能使连续波导弹在不丧失原有低空性能的前提下，具备攻击武装直升机和气球靶的能力。

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Under the terms of the contract, SRA, of Fairfax, Va., will help various Air Force programs to improve employee and organizational performance, the Defense Department said.

美国国防部说，根据这项合同，位于弗吉尼亚州Fairfax的SRA公司将为空军的一些计划提供帮助，从而改进雇员和组织上的性能。

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The measures are aimed at curbing the high levels of air pollution in Beijing, which may affect the performance of athletes during the Games.

上述种种措施，都是为了改善北京市严重的空气污染，以免因此影响运动员的比赛成绩。

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This year the centenary is being celebrated with a range of events, including a massive open-air performance in June as part of the Derry-Londonderry City of Culture 2013.

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Although swimmers and sprinters face no resistance beyond water and air, peak-performance feats in other sports must face strong defenses, which only improve as each sport gains sophistication.

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Amazingly complex internal-combustion engines give great performance and clean air, and the new hybrids (gasoline and electric) go 21 kilometers on a liter.

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