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At present, more screen varieties, the product is not uniform, but it is important to clear the screen mesh size and diameter determines screen of perforated and whee thickness, at the same time, influenced by the online photographic emulsions, hosting the content, obviously, perforated, the screen can be primary processing rough coated photographic emulsions in respect of this exposure time should also be the longer exposure time otherwise.

纲后,丝网品栽较众,产物参不差不齐,但有一点务必不合明,丝网的纲数与丝径不决着丝网的开孔率和网布薄度,同时,又感化着感平乳剂的网上驻留度,较着,开孔率不小、丝线不细的丝网可涂布的感平乳剂不离薄,所以曝平工夫也答相答加长,反之则曝平工夫缩长。

According to the working procedure chart of theZH1105W diesel engine's gear cap analysis workpiece's precision, the surface roughness, thespecification, the processing spot size, the shape structure,material degree of hardness, the work piece rigidity and thedifferent of the components batch size to definite technique andtechnological process, determine aggregatemachine-tool's overall plan. Consider to theirregularity components but have high accuracy holes to beprocessing. So,"two holes at aface" is the best localization plan.

根据ZH1105W柴油机齿轮室盖的工序图分析其精度、表面粗糙度、技术要求、加工部位尺寸、形状结构、材料硬度、工件刚性及零件的批量的大小不同,确定被加工零件工艺方法和工艺过程,确定该组合机床的总体设计方案;考虑该零件表面结构的不规则性但有较高精度的孔需要加工,定位基准选择&一面双孔&是最佳的方法。

We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法,制备出了孔径在20-150nm之间可调和具有不同孔结构(如Y形、树枝状、锯齿状)的系列多孔氧化铝模板,在此基础上,利用电化学沉积、气相催化生长和化学控制腐蚀等方法,成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系,探索了基于模板孔壁内沿生长一维结纳米材料的机制,较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能,为低维纳米材料器件化提供了实验基础。

The pigment of Berberis heteropoda Schrenk is a type of anchocyanin and it is strong in resistance against light and to some extent, good in enduring heat and low consistence oxide. But it is poor in resistance against reductant and preservative. It can be applied to the condition of PH. It is also found that sucrose and most of metal ions do not exert negative effects on the stability of the pigment, except Fe3+, Fe2+and low consistence Pb2+, which have some extent effects. Adding stability matter can improve its stability. The harm trace elements contains are within requirement of the National Standard on food safety, As the lexicological study indicates that the pigment does not have any toxicity and mutagenesis, it can be used as edible pigment.

结果表明:大孔树脂吸附-解吸附法纯化黑果小檗色素实验室工艺简单易行,色素回收率高;黑果小檗色素属于花色苷类色素;耐光性好;对热有一定耐受性;对低浓度氧化剂有一定耐受性;耐还原性差;对防腐剂耐性差;适用PH<6条件下使用;蔗糖和大多数金属离子对色素无不良影响,但Fe~(3+)、Fe~(2+)、Sn~(2+)和低浓度pb~(2+)对色素有影响,加入稳定剂后,可提高色素的耐热性、耐氧化性、耐防腐剂能力;经对有害微量元素进行检测和毒理试验表明,该色素安全无毒,可以作为天然食用色素使用。

Because the skin can influence its performance deeply,the measurement,process control and theoretical calculation of the skin thickness have become the main problems in the processing of microcellular foam polymer.

皮层的存在对微孔结构材料的性能有很大的影响,皮层厚度的测量、工艺控制和理论计算是微孔材料加工中的主要问题。

Type of guide Loading method Block mounting direction Ball retainer Ball Cage Ball 4-way Equal Load Type Top surface mount,bottom surface mount Yes Yes LaCS is available Plate cover / steel tape is available Dust cover type Seal Resistance Value Seal types for seal resistance value Yes None Bellows 6.90 SS Dedicated cap for the LM rail mounting hole Applicable to QZ Lubricator Lubrication method Grease brand Nipple, plu...

导轨型号负荷方式滑块安装方向防止滚珠脱落用保持器球保持器滚珠 4方向等负荷型从上安装,从下装有有与LaCS配用可选用紧绷薄钢带/粘接薄钢带防尘罩形式密封垫片阻力值各种阻力值的密封垫片有无软式伸缩护罩 8.90 SS LM轨道安装孔专用防尘盖可配用QZ润滑装置润滑方式润滑脂品牌螺纹接口、配管接头。。。

Type of guide Loading method Block mounting direction Ball retainer Ball Cage Ball 4-way Equal Load Type Top surface mount,bottom surface mount Yes Yes LaCS is available Plate cover / steel tape is available Dust cover type Seal Resistance Value Seal types for seal resistance value None None None 1.80 SS Dedicated cap for the LM rail mounting hole Applicable to QZ Lubricator Lubrication method Grease brand Nipple, plumb...

导轨型号负荷方式滑块安装方向防止滚珠脱落用保持器球保持器滚珠 4方向等负荷型从上安装有有与LaCS配用可选用紧绷薄钢带/粘接薄钢带防尘罩形式密封垫片阻力值各种阻力值的密封垫片无无无 1.40 SS LM轨道安装孔专用防尘盖可配用QZ润滑装置润滑方式润滑脂品牌螺纹接口、配管接头型式 C4 有脂润滑。。。

Type of guide Loading method Block mounting direction Ball retainer Ball Cage Ball 4-way Equal Load Type Top surface mount Yes Yes LaCS is available Plate cover / steel tape is available Dust cover type Seal Resistance Value Seal types for seal resistance value Yes Steel tape Bellows 17.00 SS Dedicated cap for the LM rail mounting hole Applicable to QZ Lubricator Lubrication method Grease brand Nipple, plumbing fixture...

导轨型号负荷方式滑块安装方向防止滚珠脱落用保持器球保持器滚珠 4方向等负荷型从上安装有有与LaCS配用可选用紧绷薄钢带/粘接薄钢带防尘罩形式密封垫片阻力值各种阻力值的密封垫片有薄钢带软式伸缩护罩 17.00 SS LM轨道安装孔专用防尘盖可配用QZ润滑装置润滑方式润滑脂品牌螺纹接口、配管接头型。。。

The condensing tower comprises a gravity settling chamber where a set of loading trays is fixed, wherein the middle-lower part of the condensing tower mounts a round condenser tube, of which the upper and lower ends is connected with a sieve pore type baffle, in manner of closest arrangement based on the round section. The upper part of the condensing tower comprises a spherical cover without hem, a pre refrigerating chamber, a gas pipe type refrigerated trap, and the lower there of is a passive cold trap.

冷凝塔包括重力沉降室,沉降室内安有一组承料盘,冷凝塔中下部有按圆截面最紧密排列的方式设置圆形冷凝管,冷凝管上、下端联接有筛孔状隔板;冷冻塔上部分包括无折边球形塔盖,预冷冻室和气管式冷冻捕集器,下部分为无源冷阱捕集器。

Leakage in the initial observation to determine the basis of the leakage site, and then manually set car observation, if the leakage were no significant changes in static and dynamic sealing ring problem; such as the disk when there are significant changes in leakage can be concluded that the dynamic , static friction ring problems; such as leakage of medium along the jet axis, w你好le moving most of Central ring problems, leakage to the surrounding medium or from the water spray cooling holes in the leakage, the seal ring for static failure.

杂质泵安装静试时泄漏机械弥缝安装调试好后,一般要进行静试,察看泄漏量如泄漏量较小,多为动环或静环弥缝圈存在问题;泄漏量较大时,则表白动、静环磨擦副间存在问题在开端察看泄漏量、判断泄漏部位的根蒂根基上,再手动盘车察看,若泄漏量无明显变化则静、动环弥缝圈有问题;如盘车时泄漏量有明显变化则可下定论是动、静环磨擦副存在问题;如泄漏介质沿轴向喷洒,则动环弥缝圈存在问题居多,泄漏介质向四周喷洒或从水冷却孔中漏出,则多为静环弥缝圈失效此外,泄漏通道也可同时存在,但一般有主次区分,只要察看细致,认识结构,一定能正确判断

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。