The principle of charge pump for achieving power factor correction (PFC) and its unity power factor condition are analyzed.

分析了电荷泵电路实现功率因数校正（PFC）的基本原理和条件；

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However, an airline spokesman said poor weather was more likely to have been a factor in the crash than the condition of the plane.

然而，一名航空公司发言人说飞机失事的决定因素更大的可能是因为恶劣的天气而不是飞机的状态。

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Although your age is still the most significant factor in getting breast cancer, there are things you can do to lower your chances of getting the condition.

虽然你的年龄仍然是你是否会患上乳癌的最重要因素，但还是有一些办法能减低你的患病机率。

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Another risk factor is a condition called delusional disorder -- and in particular the "persecutory type" -- that causes people to believe that someone is plotting against them, Rossiter said.

CNN: Insights on why people 'snap' and kill

He points to the incident involving Danny Fitzsimons - who shot dead Scottish security contractor Paul McGuigan and another colleague in Iraq in 2009 while suffering from PTSD - as evidence that the condition is a very real risk factor for those working as private security contractors.

BBC: Post-traumatic stress and the hired gun

First, if I were looking to buy a home in one of the Cook County municipalities, I would go to my site and research the financial condition of the local taxing districts and make that a big factor in determining where to buy.

FORBES: Cook County, Illinois Treasurer Warns U.S. Homeowners And Retirees Of Local Debt Hazards