| 1. | Moreover, they are also quieter, as they are not driven by an airscrew .
此外，由于不用空气螺旋桨驱动，所以噪音也比较小。
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| 2. | Specification for mahogany for use in airscrews
航空螺旋浆用桃花心木规范
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| 3. | Airscrew balancing apparatus
螺旋桨平衡装置
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| 4. | Airscrew reduction gear
螺旋桨减速齿轮
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| 5. | Airscrew pitch measuring
螺旋桨距测量
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| 6. | Ustable pitch airscrew
可调距螺旋桨
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| 7. | Constant pitch airscrew
定距螺旋桨
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| 8. | Constant speed airscrew
定速螺旋桨
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| 9. | Variable pitch airscrew
变距螺旋桨
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| 10. | Airscrew blade area
螺旋桨叶面积
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