最后根据前盖板的形状进行旋转操作，得到叶轮的三维实体模型。
Finally, according to the shape of the front cover of the rotation, three-dimensional solid model by the impeller.
该换能器利用前盖板的弯曲振动与换能器的纵向振动耦合展宽频带。
A broadband underwater Tonpilz transducer was designed by using the coupling of transducer's longitudinal vibration mode and the bending vibration mode of front mass to widen its frequency band.
前盖板上的副叶片可以减少叶轮进口的旋涡损失和颗粒对密封环的磨损。
Former deputy leaves on the cover can reduce the imports of the vortex impeller and particle loss of the wear and tear on the seal ring.
必须先将分页装订处理器安装到本机上，然后再放置其前盖板和输出托盘。
The finisher must be attached to the machine first before placing its front cover and output tray.
并着重对前盖板与叶轮间隙内的流动进行了分析，揭示了半开式叶轮输送两相流介质的优点所在。
The flow analysis in the tip between front board and impeller was emphasized, which reflected the advantage of semi-open impeller when it transported the 2-phase medium.
该超声换能器采用纵向振动方式，其前盖板连接了一个半波长圆锥形变幅杆，以增大超声换能器输出端的振幅。
The ultrasonic transducer vibrates longitudinally, its front cover plate links up with a half wavelength circular conical horn to increase the amplitude of the output end of the ultrasonic transducer.
前固定盖板和后固定盖板的末端破损。
前固定盖板和后固定盖板的末端破损。
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