查询词典 roughness

On the basis of researching sealing pipeline joint structures with double-cone pipe union in depth, this paper used the method of Robust Design, synthesized the mainly factors such as geometrical sizes of components, mechanical property of material, surface roughness of components, axial preloading force, fit clearance, taper and the difference of taper etc., and obtained a set of design rational parameters.

本文在深入研究双锥形管接头密封管路联接结构的基础上，运用稳健设计方法，综合元件几何尺寸、材料力学性能、元件表面粗糙度、轴向预紧力、配合间隙、锥角和锥角差等因素，找出了该结构比较合理的设计参数组合。

Trim the gully shape error, reduce the bearing surface roughness, improve the physical and mechanical properties of bearing collar, improve the stress condition, reduce the surface of bearing vibration and noise

修整沟道的形状误差，降低轴承表面粗糙度，改善表面物理机械性能，改善轴承套圈表面的应力状态，降低轴承的震动、噪声

It was found that the composite structure of Ti-Si-N films, nanocrystalline TiN embedded in amorphous Si_3N_4 matrix, was confirmed in this work. The increasing deposition pressure resulted in the appearance of columnar structure, decrease in the film density, increase in the surface roughness, and deterioration of the adhesion strength and tribological properties.

结果表明，Ti-Si-N薄膜为纳米相的TiN镶嵌于非晶态的Si_3N_4基体中的结构，溅射气压的增大导致薄膜中柱状晶的出现，薄膜致密度下降，表面粗糙度增加，结合力和摩擦学性能恶化。

The results show that the effects on surface roughness are feed speed, depth of cutting , tool rake angle and parts hardness in turn.

结果表明：工件进给速度对表面粗糙度的影响最大，切削深度和刀具前角次之，工件硬度影响最小。

This paper studies the influence of eletrical parameters on the cutting rate and surface roughness of the cutting compound material SiC p/LY12 in wire cutting electric discharging machining and analysed the surface features of cutting with SEM.

研究了电参数对电火花线切割加工SiCp/LY1 2复合材料的切割速度和表面粗糙度的影响；用扫描电镜分析了复合材料线切割加工表面的SEM形貌。

Wire cutting electric discharging machining ; compound material of SiC p/LY12; surface roughness ; cutting rate

电火花线切割加工； SiCp/LY12复合材料；表面粗糙度；切割速度

Diamond Dresser ; Dressing Parameters ; Dressing Rate ; Surface Roughness

中文关键字钻石修整器；修整加工参数；修整率；表面粗糙度

In the aspect of experiment research: for engineering ceramics such as ZrO2^Si3N4experiments are carried out by a diamond face mill cutter. Cutting force and machined surface roughness are measured, they indicate:(1) Based on the experiments of scratching and ultra-precision face-milling, it is considered that micro-milling depth is the most important influence factor to realize brittle/plastic transition.

实验研究方面：以ZrO_2、Si_3N_4等工程陶瓷为研究对象，在加工中心上进行了切削力及表面形貌实测，实验结果表明：(1)由划痕实验和金刚石端铣刀超精密铣削实验，认为切削深度的微量化将是实现工程陶瓷材料脆塑性转换的重要条件，同时材料本身的特性也是不可忽视的因素。

It is verified that the surface roughness and turning force are improved by using diamond tool.

证实用金刚石刀具车削硅铝合金可以获得优良的表面粗糙度和小的切削力。

Hydraulic experiments are conducted to investigate the Manning roughness coefficient of the tunnel drainage system .

利用多排矩形基桩模型进行水力试验，并在改变纵向及侧向模型间距及水深等条件下，研究隧道排水系统的曼宁粗糙系数特性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。