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Carry on structure analysis to the spare parts first, understand its structure characteristics to choose suitable semi-finished product and the semi-finished product manufacturing of the reasonable a craft thus;Then the technique request of spare parts carries on analysis, understanding it each process superficial accuracy grade and the surface rough degree, make it process the fixed position in the process and clip a tight way in assurance inside the scope of economic accuracy, draw up the machine of spare parts to process craft process thus and further, choose each work preface to process equipments and craft material, the assurance slices to pare dosage and craft size, computing the man-hour of each work preface settle sum.

首先对零件进行结构分析,了解其结构特点从而选择合适的毛坯以及合理的毛坯制造工艺;再零件的技术要求进行分析,了解其各加工表面的精度等级以及表面粗糙度,使其在经济精度的范围内确定加工过程中的定位和夹紧方式,从而进一步拟订零件的机械加工工艺过程,选择各工序加工设备以及工艺装备,确定切削用量以及工艺尺寸,计算各工序的工时定额。

A real-time and on-line detecting part quality antitype system, which shows well effect by experiment, is developed.

建立了实时在线检测加工质量(零件加工尺寸和表面粗糙度)原型系统,在实验中获得良好的效果。

In addition, coarseness degree were analyzed and compared between planed and sanded Moso bamboo or Chinese fir surface.

另外,还对经过砂光和刨光的毛竹和杉木表面粗糙度进行了对比分析。

This phenomenon was caused by the combination of surface roughness of coating and particle size effect.

这是由涂层表面粗糙度和粒子尺寸效应共同作用的结果。

The results showed:among the 7 isolates, five isolates of HY3、GY1-3、ZJ1-1、HP1、FC3 had same colony shape, irregular shape, liquidlike, slimy, opacity with smooth surface;the other two isolates had same shape, irregular shape, dry, opacity with coarse surface. By inoculating eucalyptus with the 7 isolates, the plants were infected apparently, and the young plants of eucalyptus in control experiment with tap water were not infected. By cultivating eucalyptus cuttings with the bacterial suspensions without EPS, the incidence of disease was very distinct,but compared with the former bacteria suspension,the incidence of disease has decreased at different degrees. By screening out two isolates of strong pathogenicity and two isolates of weak pathogenicity from the 7 isolates,making the bacterial suspensions with them to inoculate the young plants of eucalyptus, two treatments of cutlings and ramets with rats were set with 5 repetitions in every treatment, the results of data analysis showed: for the cutlings, the bacterial contents in upper and middle parts、upper and lower had significant difference;for ramets with roots, the bacterial contents in upper, middle parts, lower had significant difference between each other; For both the cutlings and ramets with roof, the bacterial contents in xylem and phloem had significant difference. The interaction between vertical and horizontal parts for the bacterial content had significant difference. For the two isolates of HY3 and 93B which were screened out at last,their activities of the cellulase were: 1.955ug/ and 1.288ug/ respectively, and had significant difference; the activities of pectase were: 1.325 ug/and 1.24ug/ respectively, and had no significant difference. The content of EPS extracted from the two isolates of HY3 and 93B was very different: 7.08x10-8ug/cell and 5.17x10-8ug/cell.

结果显示:7个菌株中,其中5个菌株HY3、GY1-3、ZJ1-1、HP1、FC3的菌落形态相同:不规则形状、流体、粘性、不透明、表面光滑;另外2个菌株93B、GN1菌落形态相同:不规则形状、干燥、不透明、表面粗糙;用7个菌株接种剪根桉树苗,发病情况非常明显,而自来水对照实验中桉树苗却不发病;无EPS菌悬液培养桉树剪根苗,发病率也很明显,但是相比原菌液,则发病率有不同程度的下降;从7个菌株中间筛选出来2个强致病性菌株和2个弱致病性菌株,用它们配制菌悬液培养桉树苗,设置剪根和不剪根两个处理,每个处理设置五个重复,数据分析结果显示:对于剪根苗,上部和中部、上部和下部的含菌量有显著的差异,中部和下部含菌量差异不显著;带根苗,上部、中部、下部含菌量彼此之间差异显著;不管是剪根苗还是带根苗,木质部和韧皮部含菌量之间的差异都非常显著;上中下与木韧交互作用中,含菌量差异非常显著;最后筛选出来的强弱2个菌株HY3和93B,它们的纤维素酶活性分别为:1.955ug/和1.288ug/,具有显著的差别;果胶酶的活性分别为:1.325 ug/和1.24ug/,没有显著的差别,而且HY3和93B两个菌株细胞分泌的胞外多糖的含量差异很显著,分别为:7.08×10-8ug/cell和5.17×10-8ug/cell。

There was an obvious phenomenon of mechanical occlusion on the cold spray coating interface, and the rolled coating had the phenomenon of metallurgical bonding; The structure of cold-sprayed coating is dense. The poriness of the cold-sprayed coating gradually reduce as the coating's thickness increase.

结果 涂层界面形貌的不同反映出两种涂层的结合机理不尽相同,冷喷涂层界面出现明显的机械咬合现象,而轧制涂层以冶金结合为主;冷喷涂层组织致密,孔隙率随着喷涂厚度的增加逐渐降低;冷喷涂层的表面粗糙度高于轧制覆铜板,有必要对其进行一道轧制处理,改善涂层表面平整度。

For the effect of surface oxidation on emissivity:(1) most oxidized samples have higher emissivity than unoxidized samples, except AL 2024 and AL 7005. The exception is due to roughened surface caused by the onset of melt and the change of surface color at high heating temperature.

铝合金有氧化与无氧化对放射率的影响:(1)大部份铝合金有氧化的放射率皆大於无氧化的放射率,除了AL 2024与AL 7005,因为熔化造成表面粗糙度增加及高温加热时表面色泽的改变导致无氧化的放射率大於有氧化的放射率。

The invention provides an insulation pad which is provided with high strength and high friction between a rail cap and a clamp, wherein the pad uses stainless steel as base, two faces of the pad are baked with enamel which is sanded and roughens the surface to brush a layer of silicon rubber, the outline is the same as the inside surface of the rail joint, the aperture on the pad and aperture distance are the same as the aperture and aperture distance of the clamp.

本发明就是制造一个钢轨端头与夹板间的高强度、高摩擦力的绝缘垫板,该垫板的由不锈钢板为基底,双面烤上搪瓷,搪瓷面先经喷砂处理,使其表面粗糙后,刷上一层的硅橡胶,轮廓与钢轨接头内侧表面相同,该垫板上的孔径与孔距与钢轨与夹板的孔径与孔距相同。

The cutting surface quality and its affecting factors of ZA22/Al〓O〓 composites were investigated systematically with hard metal alloy cutter on an engine lathe.

在普通车床上采用硬质合金刀具,首次系统研究了该复合材料的切削加工表面质量及影响因素,发现要获得低的切削加工表面粗糙度应选择小的切削深度、小的刀具进给量及高的切削速度。

The surface and cross section of uncoated and coated Polyvinyl acetals were analyzed by microscope and SEM, results showed that, the contact angle of the coated fiber decreased in most of the areas of the fibers, the chitosan film on the fibers was thin and uniform. At the same time, there was no residual material in the coating process and the whole process was environmentally friendly.

结果表明,该方法切实可行,通过显微镜和SEM照片对涂覆壳聚糖前后的维纶纤维进行微观分析,发现在化学纤维表面形成的壳聚糖膜薄而均匀,同时增加了化学纤维的表面粗糙度,涂覆效果较好;通过接触角的变化说明纤维的亲水性得到改善;该方法还具有无残留物和对环境友好的优点。

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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

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However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。