查询词典 static friction coefficient

The different friction coefficient between tube and die is one of the important influences in tube hydroforming. Reduce the friction as possible, it can not only benefit to tube forming, but also reduce axial force effectively.

不同的管坯和模具之间的摩擦系数也是影响管坯成形的重要影响因素之一，要尽量减少摩擦，不仅有利于管坯的成形，还能有效地减小轴向力。

The results shoW that,both Si02 and mullite can be as friction additive,the friction coefficient and wear rate of counterpart incr......

在摩擦组元含量相同的情况下，添加莫来石的摩擦材料的摩擦系数、磨损量、对偶件的磨损量均比添加SiO2者要高。

Laser-textured specimens exhibited lower and stable friction coefficient as compared with untextured specimens under dry friction. The textured surfaces also exhibited lower wear rate than that of untextured specimens. It was found that micro-dimples acted as traps for wear debris, and hence decreased abrasive wear.

在相同试验条件下与未织构面对比，织构面的摩擦系数均有不同程度减小且表现得更为稳定，并且磨损率也得到一定的降低，这是由于所制备的表面微坑起到了捕获磨屑的作用。

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础，通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析，发现：励磁故障是一个大干扰稳定性问题，励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异，已远非正弦曲线，因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想；异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆，它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆，但不能保证完全失磁之外的其它状态不会进入该阻抗圆，因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

Static mainly has anti-static clothing, anti-static shoes, masks, fingerstall, wrist band and so on.

防静电产品主要有防静电服装、防静电鞋、口罩、指套、手腕带等。

Anti-static gloves fingerstall series; no powder finger sets of series; anti-static wrist strap grounding line series; anti-static flow boxes

同得利公司是集开发，生产和销售防静电产品，净化产品的专业公司。所有的产品严格执行ISO9002管理体系生产和销售。

The company's main products: color detection instruments: Glossiness Miriam, Miriam color spectrophotometry, standard light source for color light box, transmissioní°Miriam, Miriam orange peel, fresh young tester; surface coating physical properties testing instruments: Coating thickness, wet film thickness, temperature tracker, surface humidity instrument, dewpoint meter, roughness instrument, electric spark pinhole leak detectors; Detect mechanical properties of surface coating equipment: zoned grid, and pencil hardness tester , impact tester, hardness testing sticks, Latvia Law / hydraulic adhesion tester, abrasion tester, cylinder / cone bending tester, cups sudden device, surface tension instruments, scratch pen, indentation hardness tester, etc.; paint coating equipment dedicated category: fineness board, drying time recorder, wet adhesion tester, paint ohmmeter, PH, the coating device, mixer, bead mill, mixer, spray gun, putty detector Miriam, white tester, iron cobalt colorimeter, moisture titrator; viscosity-type equipment: Viscosity Cup, density cup, bubble viscosity tube viscometer, infiltration cup rheometer, viscosity units conversion meter; laboratory standard consumables: Mitsubishi pencil tests, 3M adhesive tape test, RCA tape, rubber, the hiding power test paper for color tubes, microscopes dedicated LED ring light source, transfer ink knife and ink scraper, brush, Color Card, gray cards, zirconia beads, glass beads, pieces of cement mortar, the standard of fly ash, the standard viscosity fluid, stopwatch, chemical industry-standard compilation of manuals, paint paint testing manual; test standard Material: tin plate, steel plate, aluminum sheet, asbestos-cement pressure plate, Eterpan, glass, maple panels, MDF, copper film, polyester film, copper; measuring meter and optical instruments: digital calipers, micrometer, dial gauge a high scale, depth gauge, thickness gauge, diameter gauge, gauge block, magnifiers, microscopes, projectors, video measuring instrument; environmental test equipment: oven, constant temperature and humidity box, hot and cold circulating water bath, salt spray test chamber, high temperature resistance furnace, fluorescent UV aging chamber, xenon lamp aging chamber; electronics equipment: infrared thermometer, multimeter, clamp sheet, thermal imager, temperature and humidity meter; anti-static instruments: static tester, surface resistivity device, flat-panel monitor, anti-static footwear tester, wrist strap tester, body Tester; other types of instruments and equipment: torque tester, temperature and humidity recorder, push pull, the vibrometer, speed instrument, analytical balance, industrial Scale Units, dust particle counter, X-ray fluorescence coating thickness measurement and elemental composition analyzer, and so on.

公司主营产品：外观颜色检测仪器：光泽度仪、分光色差仪、标准光源对色灯箱、透射雾影仪、桔皮仪、鲜映性测试仪；表面涂层物理性能检测仪器：涂层测厚仪、湿膜测厚仪、炉温跟踪仪、表面湿度仪、露点仪、粗糙度仪、电火花针孔检漏仪；表面涂层机械性能检测仪器设备：划格器、铅笔硬度计、冲击试验仪、硬度试验棒、拉脱法/液压式附着力试验仪、耐磨耗试验机、圆柱/圆锥弯曲试验仪、杯突仪、表面张力仪、划痕笔、压痕硬度计等；涂料油漆类专用仪器设备：细度板、干燥时间记录仪、湿附着力耐擦洗试验仪、油漆电阻计、PH计、涂膜器、混合机、珠磨机、搅拌机、喷枪、腻子测定仪仪、白度仪、铁钴比色计、水份滴定仪；粘度类仪器设备：粘度杯、密度杯、气泡粘度管、粘度计、渗透杯、流变仪、粘度单位换算计；实验室标准消耗品：三菱测试铅笔、3M测试胶带、RCA纸带、橡皮条、遮盖力测试纸、对色灯管、显微镜专用LED环型光源、调墨刀、墨铲、狼毫刷、色卡、灰卡、锆珠、玻璃珠、水泥砂浆块、标准粉煤灰、标准粘度液、秒表、化学工业标准汇编手册、涂料油漆测试手册；测试级标准基材：马口铁板、钢板、铝板、石棉水泥加压板、埃特板、玻璃板、枫木面板、中纤板、紫铜片、聚酯膜、铜棒；量具量仪及光学仪器：数显卡尺、千分尺、千分表、高度尺、深度规、厚度规、内径规、量块、放大镜、显微镜、投影仪、影像测量仪；环境测试设备：烘箱、恒温恒湿箱、冷热循环水浴、盐雾试验箱、高温电阻炉、荧光紫外老化试验箱、氙灯老化试验箱；电子类仪器：红外测温仪、万用表、钳形表、热像仪、温湿度仪；防静电仪器：静电测试仪、表面电阻仪、平板监测仪、防静电鞋袜测试仪、手腕带测试仪、人体综合测试仪；其他类仪器设备：扭力测试仪、温湿度记录仪、推拉力计、测振仪、转速仪、分析天平、工业台秤、尘埃粒子计数器、 X-射线荧光涂层测厚和元素成分构成分析仪，等等。

In some special situation, Anti-static foot grounder will take place of anti-static wrist strap, and it is more economical than anti-static shoes.

防静电脚步环在某些需要机动性的场合里，防静电鞋或脚环成为同功能手腕带的替代品，而接地脚环又比防静电鞋更为经济。

Using the classes from the previous two exercises, add a pair of static member functions to class Bar. The first static, named FooVal, should return the value of class Bar's static member of type Foo. The second member, named callsFooVal, should keep a count of how many times xval is called.

使用上面两题中定义的类，给 Bar 类增加一对成员函数：第一个成品命名为 FooVal，返回 Bar 类的 Foo 类型 static 成员的值；第二个成员命名为 callsFooVal，保存 xval 被调用的次数。

A static interval optimization method for structures was proposed. The matrices of structures with interval parameters were given. Combining the interval extension of function with the perturbation theory of static analysis, the method for interval static analysis was derived.

提出了一种在位移约束下结构静力区间优化方法，给出了区间参数结构矩阵，将结构静力分析的摄动理论与区间函数扩张定理相结合，推导了结构静力分析的区间方法。

That snake Alaric named Archbishop...

庇护。。。那个毒如蛇蝎的Alaric被命名为大教主。。。

You have done lots of magical things to be amazed at.

你做了很多神奇的事物感到惊讶。