介质

A series of erosion-corrosion test has been done to J55 steel under the influence of current of gas-liquid phase by indoor self-made devices, and the corrosion mechanism of current of gas-liquid phase to oil pipe's inner surface has been got. The results show that oil pipe's inner surface will be corroded fleetly by liquid medium and corrosion products will form on it. But at the same time, the corrosion products or protective layer will be removed from the inner surface of steel pipes under the alternate impact of high speed gas and liquid flow, and on this bare steel surface corrosion film will form again and be removed again. Thus, by these ways the corrosion is exacerbated. Surface erosion-corrosion failure comes into being with the circulation of this process going on.

本文主要在气液两相流作用条件下，通过室内自制装置，对管材钢J55做了系列冲刷-腐蚀试验，结果表明，气液两相流对钢管内表面冲刷－腐蚀的机理是钢管内表面会受到液体介质的快速腐蚀，生成腐蚀产物，同时钢管金属表面不断被具有高流速的气液相交替地冲击，不断地从金属表面脱去保护膜或腐蚀产物，裸露的钢表面又会被介质快速腐蚀形成腐蚀膜后，再被两相流冲掉，如此反复，造成管内金属表面膜的连续破坏，使腐蚀加剧，最终导致钢铁表面的冲刷腐蚀失效。

The results show that the glass bead is the best choice of impact media for mechanical plating .

对比了不同种类冲击介质的物化特性，指出玻璃珠是机械镀锌冲击介质的最佳选择。

The results show that the hollow glass microspheres could be coated with Al film by a...

在Al膜厚度相同的情况下，镀Al微珠加入量越多，则人工介质材料的介电常数越大。所制备的人工介质材料介电损耗小于0.02，密度小于0.8 g/cm3。

When proceeding pump testing, we collect a good many parameters, and figure out the pump gross head, pump shaft power, NPSH and other parameters. Different units of those parameters are used in different countries, and sometimes the customer asks for the test data of special media. Making a test of every medium of the same pump is not realistic, and the costs will be increase, so we convert the units of the data, and figure out the testing data according to different customer's special requirements. We reduced costs and got good remarks from the corporation through the application of unit conversion technology.

水泵试验时，要采集诸多参数，并且根据这些参数计算出扬程、轴功率、NPSH等数值，不同国家这些参数采用的单位不同，企业必须能够按照客户要求的单位提供试验数据；并且有时客户要求得到水泵在特殊介质下进行试验得出的试验数据，同一台泵在每种介质下都做一遍试验不太现实，而且会提高企业的生产成本，提出将采集的数据进行单位换算，根据不同国家或者客户的特殊要求求出泵的试验数据，在实际应用中节省了试验成本，得到了企业的好评。

In order to research the decay laws of pressure wave and positive pressure actuation duration with the increasing propagation distance under the repeated penetration and explosion of conventional weapons in rock, the tests with varying scale charge and scale distance of the first drilled explosion and the repeated drilled explosion are completed.

为探索常规武器重复打击下岩石介质中压力波及正压作用时间随传播距离的增加而衰减的规律，进行岩石介质中不同比例装约和比例距离的一次钻孔爆炸和重复钻孔爆炸试验。

By this method,a sample of ground ore can be ascertained in the short time of a day whether it is refractory,whether it is necessary to be treated in the presence of acidic medium or alkaline medium and what oxidant should be employed.

在拿到磨细矿石后一天内就可判断出这种矿石是易处理矿，还是难处理矿，是需要在酸性介质中处理还是需要在碱性介质中处理，以及选择多大氧化能力的氧化剂。

A high cost effective 1×7 cylindrical mixing rod plastic optical fiber coupler is proposed.

引言近年来，塑料光纤作为宽带局域网的传输介质已成为国内外的研究热点，塑料光纤可望以显著的性能价格比优势与电缆和石英光纤相竞争，从而成为高速局域网的一个主要传输介质[1] 。

It was validated experimentally. Under the optimized operating condition for transparent samples, the changing rate of the phase difference curve near the resonance angle was reduced with the enhancement of the sample's attenuation coefficient. This degrades sensitivity of phase detection of the SPR based sensors.

结果表明：针对透明介质优化设计的SPR结构用于测量吸收介质时，相位差曲线在共振角附近的变化率随样品衰减系数的增大而减小，导致SPR相位型传感器的灵敏度退化。

In allusion to the problems existing in using medium pressure air as drilling fluid under the conditions of breccia formed by small structural action, loose coal layer and unstable formations, new type of drilling tools and bits was designed. The mechanism of cutting removal by air media was stated and analyzed.

在针对小构造带形成的角砾岩、松散煤层、不稳定地层等瓦斯地质条件下，采用中压风作为冲洗介质进行钻探中所存在的问题，重新设计了新型的钻具级配、正反向一体化钻头等，并且对风介质的排渣机理进行了阐述和分析。

After the deduction of high order temporal and special difference approximation to the wave equation, the snapshots of wave propagation in an infinite monoclinic media and synthetic three components surface and VSP data for a flat layered model are presented.

推导了交错网格中时间和空间上的高阶差分近似公式，并针对二维单斜各向异性介质，给出了具体的空间差分网格的形式。在上述理论的基础上，利用交错网格高阶有限差分技术，首次对单斜各向异性介质中波的传播特性进行了模拟。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。