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.
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.
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