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The rule of dry sliding friction wear of vermicular iron was analyzed. The influence of working conditions, composition and structure on dry sliding friction characteristics was investigated, 3D morphologies of friction surfaces of vermicular iron and temperature characteristics of friction surface were discussed. The results showed that, compared with nodular and gray irons, vermicular iron has lowest wear rate, highest friction coefficient and lowest friction coefficient attenuation, so it is suitable to be as the material of braking device.

分析了蠕墨铸铁的干滑动摩擦磨损规律，研究了工况条件、成分、组织对蠕墨铸铁干滑动摩擦学特性的影响，探讨了蠕墨铸铁摩擦表面二维形貌与摩擦表面温度特性，结果表明：蠕墨铸铁与球墨铸铁和灰铸铁相比具有最低的磨损率和最高的摩擦系数与最低的摩擦系数衰减量，适合于作为制动器材料。

Complicated working conditions, such as water-retaining structures to bear a lot of water pressure, Seepage from the osmotic pressure of building the strength and stability negative; sluiceway discharge structure, right bed and bank erosion has a strong role.

使工作环境复杂化，例如水保留的结构负担很多从建立力量和稳定阴性渗透压的水压，渗流；闸沟放电结构、正确的床和银行侵蚀有一个强的角色。

Lost foam process is one of the most advanced casting crafts, and it can be applied in different materials, sizes castings such as steel ,iron, aluminum castings.High-quality of casting with precise size and smooth-faced; no special requirement for material; reduced trimming work and mechanical processing; Fewer inner flaws, and more compact structure.Environmental-protecting. Working conditions could be improved greatly; at the same time reduced labor intensity and decreased energy consuming could also be achieved.

消失模铸造工艺充分汇集了实型、法铸造工艺的优点为一体适应于钢、铁、铝等各种牌号各种材质不同结构的大、中、小型各类铸件利用干砂固型复制原型原样铸件几何尺寸的精密度高无飞边、毛刺、冷隔均匀一致表面光洁度接近精密铸造铸件内部结构稳定排除了砂眼、气空、缩松等铸造缺陷该工艺充分利用了环保理念且投资少整个生产过程没有污染。

They included slavery, serfdom, brutal working conditions, starvation wages, child labor, and, in the Americas, the "Indian Problem", as it was known at the time.

它们包括奴隶，农奴，残酷的工作条件，饥饿工资，童工，并在美洲，"印度问题"，因为它是已知的时间。

2 The temperature of the terms 3.2.1 Operating temperature operatingtemperature Working conditions in the steam trap inlet temperature.

3.2有关温度的术语 3.2.1 工作温度operatingtemperature 在工作条件下蒸汽疏水阀进口端的电动球阀温度。

According to the working conditions of the cutting lubricating coolant used in stone processing,through the evaluations on the base oil, emulsifier and anti-wear agent,a specialized emulsifying oil for stone processing coolant is developed by making use of the resources of naphthenic thick crude from Karamay.

根据石材加工使用的切削润滑冷却液工作要求，利用克拉玛依独特的环烷基稠油资源，通过对基础油、乳化剂、抗磨剂等评选，开发研制出专用石材加工冷却液乳化油，并自行制定相应的产品技术指标。

The president's statements are strewn with promise of better working conditions.

总统的发言里充满了对改善工作条件的许诺。

The workers went on strike, demanding better pay and working conditions.

工人们举行罢工，要求更高的报酬和更好的工作条件。

The factory workers went on strike for better pay and working conditions.

工厂工人为提升待遇及工作环境而罢工。

According to the failure characteristics and working conditions, a test plan of submersible pumps was proposed.

按照潜水电泵的失效特征和工作条件制定了潜水电泵的可靠性强化试验方案，并抽取试样进行了强化试验。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。