The traditional theory about contracts is that the contract establishment is a judgment a-bout fact, instead of value, and the contract force takes place only when it is valid.

传统合同理论认为，合同成立是事实判断，而非价值判断，合同的效力只有在合同生效后才能发生。

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Case change principle entitles the judge to denying the free jurisdiction of contract force on the basis of fairness principle in practice, but there are misunderstandings in legal practices.

情事变更原则实际上赋予法官根据公平原则否定合同效力的自由裁量权，司法实践中对该原则存在误解。

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SELEX Galileo’s contract with the Indian Air Force foresees the supply of 17 PAR systems.

SELEX伽利略公司与印度空军的合同预示着将向其提供17部PAR系统。

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They are competing to win an Air Force contract to build new refueling planes.

VOA: special.2010.09.27

The military also hopes to boost the "contract force" with recruits from neighbouring former Soviet republics.

BBC: Russian soldier beside APC

The strange thing about the Saudi contract is that officials there had reportedly shown indications of waiting until the U.S. Air Force contract was announced.

CENTERFORSECURITYPOLICY: EADS_Subsidies

Even though the contract is in force, I did agree to that point.

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