Finally, in view of vortex sheet, the formula of virtual mass has been re-derived.

最后，本文从涡层的角度重新推导了翼型虚拟质量计算公式。

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The virtual mass of the spring was brought out firstly and the dynamic model was established sequentially.

首先确定多股螺旋弹簧的虚拟质量，建立了多股螺旋弹簧的动态模型。

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The interphase forces on the propagation were investigated, including wall shear stress, virtual mass force and drag force.

着重分析了相间作用力，包括壁面剪切应力、虚拟质量力、拖拽力，对压力波传播速度和衰减的影响。

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We have Webcasts, blogs, podcasts, cached video, virtual worlds, lists, mass texts, cable television.

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BioWare is changing the way players interact with virtual characters in the culmination of their Mass Effect trilogy.

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For virtual worlds to be able to extend this usefulness to the mass of people a lot of work has yet to be done, said Mr Rosedale.

BBC: NEWS | Technology | A very real future for virtual worlds