This study developed a viewfactor model to simulate the physical vapor deposition of copper interconnect in low pressure conditions using cylindrical targets.
研究开发了一个角系数模型来模拟低气压下圆柱靶溅射沉积铜连线。
2
One limiting factor is the viewing Angle, which is comparable to using a camera lens: a telephoto lens has a narrower view than a wide-angle lens.
限制因素之一就是观察角度，这与使用照相机的情况类似：长焦镜头的视野比广角镜头的观察角度要窄得多。
3
In his view, benchmarking is not practical for securities traded off-exchange, especially in thin markets where price is only one factor in a deal.