表面粗糙的

The conception of the precision of the main parts for dry battery application and the working chart of the tolerance of the dimension and shape and the coarse degree of the surface were put for ward.

本文提出了干电池主要零配件的精度概念以及尺寸公差、形位公差、表面粗糙度等精度要求的工作图表达形式。

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。

This paper introduces structure,working principle,force analyzing and advantage of the clamp using in cutting bearing hole of coal car whee3. A system of the ultrasonic elliptical vibration cutting with the single longitudinal animation was developed.

利用这种结构研制了一套单激励超声椭圆振动车削系统，采用PCD刀具对LY12实心件和薄壁筒工件进行了精密切削实验，实验结果表明椭圆振动切削可以大幅度降低切削力，明显改善薄壁工件的形状精度，同时工件还具有较好的表面粗糙度。

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。

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。

Based on the theory of thermal emission polarization and the method of thermal emission polarization detection, the relation between the surface roughness of aluminum and steel plates and their degree of linear polarization of the thermal emission was studied by using a kind of thermal imaging polarimeter.

中国科学院安徽光学精密机械研究所遥感研究室，合肥 230031根据热红外偏振的原理和探测方法，利用一种热红外偏振探测系统分别研究了铝质和钢质金属板热红外偏振度和其表面粗糙度之间的关系。

Through theoretical analysis and according to experimental re- suits,this paper proves the technology of extrusion grinding and polishing and then ultrosonic cleaning of aluminium profile extrusion dies after electro discharge ma- chining to be an ideal precision grinding technology.

本文通过理论分析和实验结果，证明了对经电加工后铝型材挤压模具工作带进行挤压珩磨抛光和超声波清洗是理想的精密研磨技术，有效地去除了变质层和残余应力，表面粗糙度小于 Ra=0.4μm，满足了该模具 PCVD TiN 的工艺要求。

Gutties had textured surfaces to improve their aerodynamic qualities and where also cheaper to produce.

Gutties有粗糙的表面，以提高他们的素质，并在空气动力学也降低制造成本。

The plant currently use domestic advanced casting process - iron-coated sand casting process produced a series of crankshaft, cylinder head castings and various types of products, the size of high precision and better surface roughness, casting the internal organization of uniform, inherent quality, Jiang popular inside and outside, is favored by Jiang, both inside and outside the preferred products.

该厂采用目前国内先进铸造工艺——铁型覆膜砂铸造工艺生产的系列曲轴、缸盖及各类铸件产品，因尺寸精度高，表面粗糙度较好，铸件内部组织均匀，内在质量好，畅销疆内外，是深受疆内外客户青睐的首选产品。

The results indicate that,the CPR of venturis with reasonable design and suitable technics is obviously higher than critical pressure ratio.

实验结果表明：设计合理、工艺合适的Laval喷管，临界背压比明显高于临界压力比，而且，比热容比越小，表面粗糙度等级越高，喉道直径越大，对应的临界背压比越大。

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。