“半影”的英语可以翻译为：[物] penumbra，half image，half shadow ...

另外, 提出了亮度步长的方法来检测阴影中的半影.In additional, the luminance step is applied to detect the penumbra.通过甲苯胺蓝染色、焦油紫染色并利用图像分析仪测量半影区面积.The area of the penumbra was measured and analyzed with an image analysis system....

“半影”的拼音为：bàn yǐng...