与台式电脑相比，它们具有较少的屏幕实际使用面积、较少资金、较少计算能力且有电池容量限制。
Compared to desktop computers, they have less screen real estate, less memory, less compute power, and battery capacity limits.
通过对边界的跟踪与矢量分析，实现了对面积的计算。实际用于生物医学、金相等图像分析，结果表明该方法可行。
The area of image is calculated by using edge tracing and vector analysis in this paper. The result is available in analysing practical biomedical and metallurgical images.
并且研究了非晶碳薄膜的场发射特性，计算了薄膜的功函数、实际发射面积和发射点密度。
The field emission properties were studied, and the work function, actual emission area and density of emission spot were calculated.
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