In this system, linear motor is applied, and under the control of computer, fast response of servo drive for tool feed, high positioning accuracy and high precision workpiece are achieved.

该系统用直线电机，在计算机的控制下，刀具进给伺服机构响应速度快，定位精度高，能高速、高精度地加工工件。

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The research work of this article is the hardware design of receiving and transmitting unit in the under-water acoustic head of Long Range Ultra short Base-Line Positioning System.

这套系统主要由水下应答器、传载水下声头和船载主控机组成。本论文的研究工作主要是长程超短基线定位系统中传载水下声头内收发单元的硬件设计与实现。

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Looking at the decline in total assets under management, equity assets are currently at about beginning-of-year levels, indicating that while many equity markets have not provided negative returns for the year, dedicated emerging market equity fund managers may have lightened up in their positioning to account for this retreat in assets under management.

FORBES: Emerging Market Sell-Off Continues