DAC mechanisms determine what a program can do based only on the identity of the user running the program and ownership of objects like files.

dac机制只是根据运行程序的用户的身份和文件等对象的所有者来决定程序可以做什么。

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Phung Dac Loc, general secretary of the Viet Nam InsuranceAssociation, said the local insurance market was attractive and stillunder-exploited, particularly in sectors such as agriculture andhousing.

越南保险协会秘书长PhungDac Loc称，本土的保险市场极具吸引力，尚有待开发，尤其是那些农业和住房相关的保险机构。

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The NSA found that most operating systems' security mechanisms, including Windows and most UNIX and Linux systems, only implement "discretionary access control" (DAC) mechanisms.

NSA发现大部分操作系统的安全机制，包括Windows和大部分UNIX和Linux系统，只实现了“选择性访问控制(discretionary access control)”(DAC)机制。

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At the core of the Fidelio SoundBar are high quality TI Class-D amplifiers - with a built-in DAC - powered by a compact SMPS (Switch-Mode-Power-Supply) to provide a full digital architecture, delivering highly efficient audio amplification and premium audio quality.

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Nuforce also offers devices such as the Icon 2 integrated power amplifier for desktop users, and the USB-powered Icon U-Dac 2 headphone amplifier for laptop users.

FORBES: How Nuforce is Reinventing High-End Audio for the Digital Age

He says Montreal-based ConjuChem (trades as CJC in the TSE) is a good buy, following positive phase II results for its type II diabetes drug DAC:GLP-1.

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