风中振动时,刷毛会产生反作用力,但同时它也可以减少机翼滑流,产生一个低气压乱流,机翼上形成回力,因而减小阻力。
Vibrating in the wind, the bristles create some drag. But they also reduce the wing's slipstream, an area of low-pressure turbulence that pulls back on the wing, and hence reduce drag.
它们拥有很有趣的特点,例如导热性差(可以做很好的隔热材料),以及低阻力(意味着表面很滑)。
They often have interesting properties, such as poor heat conductivity (which makes them good insulators) and low friction (which makes them slippery).
在胎面胶研究配方中,SSBR 2305可实现高抗湿滑性和低滚动阻力的良好平衡。
Thus the balance between the wet - skid resistance and rolling resistance of tire tread could be achieved by SSBR 2305.
采用正交试验方法,对胶料各组分进行优化,使胎面胶滚动阻力降低,同时又能保持良好的抗湿滑性能。
The various ingredients in tread compound were optimized with the orthogonal experimental method to lower the rolling resistance of tire tread without sacrificing its wet traction.
结果表明,苗木直径、转速、滑切角依次影响切削阻力大小,苗木直径与切削阻力呈平方关系;
The experiment results show that the diameter of seedling, speed of rotation and angle of slide cutting respectively influence the cutting resistance in sequence.
产品编号:轻型轮胎 产品简介:1、外观精美。2、乘用舒适,质优量轻,3、高速性能好,防侧滑性能好。4、滚动阻力小,缓冲性能好。
Description: 1, exquisite appearance. 2, passenger comfort, quality of light, 3, high-speed performance, anti-skidding good performance. 4, rolling resistance small buffer good performance.
产品编号:轻型轮胎 产品简介:1、外观精美。2、乘用舒适,质优量轻,3、高速性能好,防侧滑性能好。4、滚动阻力小,缓冲性能好。
Description: 1, exquisite appearance. 2, passenger comfort, quality of light, 3, high-speed performance, anti-skidding good performance. 4, rolling resistance small buffer good performance.
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