1) rough granular elements
颗粒状粗糙元
1.
The effects of rough granular elements on lightening wind erosion of ground were studied by considering the distribution of the friction stress exerted by the turbulent boundary layer on rough wall.
应用粗糙壁面附近湍流边界层的阻力分解规律,研究了可蚀性地表上散布的颗粒状粗糙元的防风蚀效应。
4) trip disk
柱状粗糙元
1.
Experimental investigation on boundary-layer artificial transition based on transition trip disk;
基于柱状粗糙元的边界层人工转捩试验研究
5) particle with rough surface
表面粗糙的颗粒
6) roughness elements
粗糙元
1.
Discussion on the simulation of atmospheric boundary layer with spires and roughness elements in wind tunnels;
关于风洞中用尖劈和粗糙元模拟大气边界层的讨论
2.
An experimental investigation on the transition in the boundary-layer of horizontal plane with and without single two-dimensional roughness elements has been carried out in the wind tunnel.
在风洞中对水平光滑平板以及加有粗糙元平板的边界层转捩进行了测量与研究 ,比较了不同情况下平板边界层内由振动梁激励生成的T S波沿流向和法向强度的分布规律 ,得到了相应的振型、增长曲线以及中性曲线。
3.
The numerical simulation method and experiment method were used to study the parameters of the roughness elements which affected the formation and development of the atmospheric surface layer in wind tunnel.
本文以风洞中的大气表面层为研究对象,通过数值模拟和实验研究相结合的方法,对风洞模拟中粗糙元参数对大气表面层特性的影响进行了研究,得到了模型实验区测点位置和空气动力学粗糙度随粗糙元参数改变的变化规律。
补充资料：柱状颗粒活性炭
煤质系列活性炭可用于城市饮用水高级净化，脱除余氯、除臭；也是高纯水、人工矿泉水生产过程中的高级净化材料；大规模锅炉给水预先脱除cod等有害杂质，能够提高锅炉效率和延长锅炉寿命；能够有效地脱除水中的cod、色素、臭气等毒害物质。大颗粒活性炭可以装填过滤器以及净化空气。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条