Most of the previous designs of machine enclosure were calculated according to the experical formula.

通常国内隔声罩设计均是以一维声波方程为理论基础。

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For example, a bending cell from one major machine tool builder measures 40 by 17 feet, which includes the loading robot, but does not include room to accommodate the safety enclosure.

以一个主流机床生产商测量的折弯单元为例：它占地12米长，5米宽，包括了一个上下料机器人，但是不包括容纳安全围墙的空间。

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Thank you for your letter of Feb. 15th, 2001 and the enclosure requesting quotes for parts for the captioned machine.

贵方2001年2月15日来函及要求报标题所示机器零部件之价格附件已收到，谢谢。

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