这是一架有八个座位的双螺旋桨飞机。
由连接在脚踏带上的双螺旋桨提供动力，潜艇的时速可达到8公里，并能下潜至6米深。
Powered by twin propellers connected to a pedal belt, the mini-sub can reach speeds of 8 kilometers an hour and can reach depths of 6 meters.
在建立舰船辐射噪声仿真模型的基础上，推导了单、双螺旋桨舰船辐射噪声调制谱谐波族幅值特征的数学期望表达式。
On the basis of building the ship radiated-noise model, the mathematical expectation expressions of ship radiated-noise demodulation spectrum harmonic clan feature were educed.
反向旋转双螺旋桨搅拌器迅速的搅拌作用和各种转速能快速使蒸汽和奶酪颗粒融合。
The blending action and variable RPM of the counter-rotating twin agitators quickly "fuse" the steam and cheese particles together.
反向旋转双螺旋桨搅拌器设计结合了独特的螺纹，在剪切奶酪时柔和搅拌奶酪，提高奶酪质量。
The counter-rotating twin-screw agitator design combined with the unique solid screw flights gently blends the cheese while it imparts a shearing action - improving quality.
反向旋转双螺旋桨搅拌器设计结合了独特的螺纹，在剪切奶酪时柔和搅拌奶酪，提高奶酪质量。
The counter-rotating twin-screw agitator design combined with the unique solid screw flights gently blends the cheese while it imparts a shearing action - improving quality.
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