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几乎每个现代操作系统都使用基于位屏蔽权限的模型，该模型基于主体和组按主体处理资源控制。
Nearly every modern OS makes use of a bit-masking permission-based model that deals with the control of resources by principals, based on principals and groups.
提出了一种新的基于颜色分量运算及其位屏蔽压缩的图像处理技术，并将该技术应用到了纹理状织物图案的提取研究中。
Based on color components operation and bit-mask reduction of grey value, the paper presented a novel image processing technique which was applied to obtaining textile image.
各种权限都基于屏蔽一个32位整数——示例应用程序和要求至少需要64位才能处理所需的原子权限。
Permissions were based on masking a 32-bit integer — the example application and requirements would have needed at least 64 bits to handle the required atomic permissions.
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