磨蚀性

But the working condition of the screw pump is so rigorous that the ordinary rubber could not fulfill the requirement of the terrible working condition such as high temperature,high pressure,long working hours,corrodent,seasonal stress and so on.

但采油螺杆泵工作条件十分苛刻，如高温、高压、工作时间长、磨蚀性介质、周期性挤压力等等，传统的定子橡胶已临近其性能极限。本文主要讨论纳米CaCO3和PVC树脂对丁腈橡胶的改性效果，综合提高丁腈橡胶的强度、耐油、耐磨等性能，通过改性使得丁腈橡胶能够满足采油螺杆泵定子材料的性能要求。

This design introduces a fully mechanized coal face reproduced hammer crusher and hammer crusher of principle, structure and application: hammer crusher for crushing all kinds of hardware and erosion of weak materials.

本设计主要介绍了综采工作面转载锤式破碎机，以及锤式破碎机的工作原理，结构与应用：锤式破碎机用于破碎各种中硬且磨蚀性弱的物料。

The results showed that the friability, abrasion and particles size distribution properties related to microstructure and source of mineral formation of limestone.

结果表明：石灰石的易碎性、磨蚀性、物料粒度特点与石灰石微观结构及矿物成因有关。

Cast steels are more abrasive, although their machinability is similar to that of wrought steels.

尽管铸钢的可机加工性和锻钢的大致相同，但铸钢具有更大的磨蚀性。

NEMO? Pumps are positive displacement pumps and suitable for all media of waterlike up to most thick consistency with solid or fibrous material or pasty consistency with extreme concentrations of solid, high viscous media and also gas containing,In paper making industry,NEMO?

奈莫泵是一种容积式泵，有一定自吸能力，可用于输送单一的或多种介质的流体，包括腐蚀性、磨蚀性、高粘度、含气体或固体颗粒的液体。

CRT as a booster pump and transfer pump sea water treatment and other abrasive liquids, reliable performance, and in the industry with the most extensive product line, flow up to 2200 l / h, pressure head of up to 250 meters ( specially designed high-pressure pump up to 450 meters).

CRT泵在作为增压泵和传送泵处理海水和其它磨蚀性液体时，性能可靠，而且在该行业中具有最广的产品系列，流量最高可达2200 l/h，压头最高为250米（特制的高压泵可达450米）。

Mine drainage pump are the most commonly used type of pump for the discharge with smaller abrasive solids of water, sand and can also be used for the emission of suspended solids, solid particle size to filter the largest aperture (usually 7 ~ 12 mm).

排水泵是矿山中最常用的水泵型，用于排放含磨蚀性较小的固体的水，也可用于沙子和悬浮固体的排放，固体颗粒尺寸最大为滤网孔径（通常为7~12毫米）。

Re-sults:it was shown that Nano MgO had excellent germicidal efficacy to the Escherichia coli and Staphylococcus aureus.To such spore as Bacillus subtilis var.niger spore,Nano MgO also produced good germicidal effect.It was proposed that abrasiveness,alka-linity,electrostatic attraction,and oxidizing power of nano MgO all combined to promote these biocidal properties.

结果： ①纳米氧化镁能有效杀灭大肠杆菌，对枯草杆菌黑色变种芽孢也有显著的杀灭效果；②纳米氧化镁对金黄色葡萄球菌和枯草杆菌黑色变种芽孢有很好的抑菌作用；③纳米氧化物的磨蚀性、碱性、氧化性以及对微生物的静电吸附使它具有抑菌和杀菌作用。

If this happens, first of all want to live, as printed on the end of a group when the business card printing and membership card-making machine to stop, and then use the non-erosion of the soft cloth to screen cleaning agent or thinners are dipped in the business card printing and membership card making graphics and text at the top of the template, the template at the top left too much cleaner.

如果呈现这种环境，首先给在印完一组板件时把制卡和会员卡制息机停下来，然后用否磨蚀性的软布把丝网纯洗剂或浓缩剂蘸涂在制卡和会员卡制息图文部位的模板不尖端，夺纲不给在模板不尖端留住功多的纯洗剂。

Because of sand erosion on the pump strong, so the concentration can not be too large.

由于沙子对泵的磨蚀性很强，因此浓度不可过大。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。