n.飞机螺旋桨
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
The winding method of girder of airscrew isn t the same as the revolving body. 相对于干法缠绕成型而言 ,湿法缠绕成型可有效降低复合材料的制造成本。
As far back as 400B.C., the Chinese were using the airscrew principle in building children's toys. 早在公元前400年，中国人就在儿童玩具中使用了这种空气动力学的原理。
The winding method of girder of airscrew isn't the same as the revolving body.The winding method and system design is described in the paper. 本文阐述了叶梁缠绕原理和叶梁缠绕机的总体设计,介绍了叶梁缠绕机的主轴缠绕机构和放卷机构。
Dynamic aortic valve, a novel design for left ventricular assistance is proposed.An impeller similar to the airscrew is placed in the position of aortic valve. 提出左心机械辅助的一种新设想-动力性主动脉瓣，在主动脉瓣的位置设置一可主动旋转的螺旋桨式机械性瓣叶(叶轮)。
Crankshaft is marine the crucial part of engine, coupling derv engine and airscrew transfer drive, be known as 10 thousand tons annulus " heart " " heart " . 我国造船业数拾年以来一直欠缺这颗"心"。因为技能被海外企业把持,曲轴价钱高且难定货,柴油机岀产厂订不到不可岀产柴油机,船厂买不到主机不大敢接船舶货单。"
