In the vacuum system, the heat radiation is the main factor to affect the temperature of each point of the filament in area source electron gun.

在真空系统中，热辐射是影响面源电子枪灯丝各点温度的主要因素。

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Since the numerical integration algorithm can estimate concentrations within the area source, the user can enter any value for the minimum distance.

对于面源范围内部的浓度，模式可以通过数值积分算法进行估算，所以用户可以输入任意小的距离。

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A new method of calculating long term mean concentration of air pollutant from area source is proposed by integrating the line source long term mean concentration model.

利用线源长期平均浓度模式对面源的积分得到了一个用风向、风速和稳定度的联合频率计算大气面源长期平均浓度的新算法。

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As the monitors were leaving the area, an unknown source fired at three vehicles, she said.

CNN: STORY HIGHLIGHTS

Real-estate agents who have sold properties in your area are another good source of information on home prices.

WSJ: Are Sellers' Appraisals and Inspections Overkill?--WSJ House Talk

"The PUK can't oust them from the area, " said the source.

BBC: Iraqi Kurds fear new Islamist group