翅果:指坚果或瘦果中果皮延伸成翼状,以利于风媒传播的果实类型。如白蜡树的果实(欧洲白蜡树)。
Samara a nut or achene whose pericarp is extended to form a wing for wind dispersal, e. g. Ash (fraxinus excelsior).
翅果:指坚果或瘦果中果皮延伸成翼状,以利于风媒传播的果实类型。如白蜡树的果实(欧洲白蜡树) 。
Samara a nut or achene whose pericarp is extended to form a wing for wind dispersal, e. g. ash ( fraxinus excelsior )
介绍了成庄矿北翼胶带机机头硐室采用锚索支护技术的实践经验。
The practice experience of adopting cable anchor supporting technique in northern belt conveyor head chamber is introduced.
当翼龙走路或静止时,第四指及其翼,只能向上翻转,成一个伸展且内翻的V型,在其身体两侧。
When a pterosaur walked or remained stationary, the fourth finger, and with it the wing, could only turn upward in an extended inverted V-shape along each side of the animal's body.
所述螺母为一圆锥体与通体光滑圆柱体连接成的凸型体,在圆锥体上至少有一个凸出翼。
The nut is of a convex body formed by connecting a cone and the integrally-smooth cylinder, and the cone is at least provided with a protruded wing.
一转子叶片,特别是为直升机旋翼,叶片制成的增强塑料和一个过程,使这种刀片在一个单一成型的运作。
A rotor blade, specially for a helicopter rotor, which blade is made of reinforced plastics and a process for making this blade in a single molding operation.
一转子叶片,特别是为直升机旋翼,叶片制成的增强塑料和一个过程,使这种刀片在一个单一成型的运作。
A rotor blade, specially for a helicopter rotor, which blade is made of reinforced plastics and a process for making this blade in a single molding operation.
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