数字逻辑系统的设计离不开计算机辅助设计CAD工具的帮助，尤其是VHDL硬件描述语言。
Now, many digital logic systems cannot do without computer aided design CAD, especially the VHDL Hardware Description Language.
本文从数字液压元件、计算机辅助设计和计算机辅助测试三个方面论述了数字技术在液压系统中的应用。
The paper investigated the digital technology applied in hydraulic system from digital hydraulic component, computer aided design, computer aided test.
通过计算机辅助设计(CAD)的数字化基托模型，在自主研制的激光快速成形系统上，选取优化的激光快速成形工艺参数，制造了全口义齿钛基托。
Based on the computer aided design (CAD) digital base of complete denture model, a titanium base was made with the RS-850 laser rapid forming system, which processing parameters were suitable.
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