介质

The efforts that have been made to explain optical phenomena by means of the hypothesis of a medium having the same physical character as an elastic solid body led, in the first instance, to the understanding of a concrete example of a medium which can transmit transverse vibrations, and at a later stage to the definite conclusion that there is no luminiferous medium having the physical character assumed in the hypothesis.

为了解释光学现象，人们曾试图假定有一种具有与弹性固体相同的物理性质的介质。这种子尝试的结果，最初曾使人们了解到一种能传输横向振动的具有上述假定所以认为的那种物理性质的发光介质。大量使用复合词与缩略词是科技文章的特点之一，复合词从过去的双片语合发展到多片语合；缩略词趋向於任意构词，例如某一篇论文的作者可以就仅在该文中使用的术语组成缩略词，这给翻译工作带来一定的困难。例如

Theoretical analysis shows that Faraday magnetooptical effect has the anisotropy, and Faraday rotation is depend not only linearly on the magnetization Min paramagnetic and ferromagnetic media or the sublatbee's magnetization Mi in ferrimagnetie and antiferromagnetie media, but also on the high-order terms of M or Mi.

理论分析表明，法拉第磁光效应具有各向异性特性；法拉第旋转不仅与顺磁性和铁磁性介质中的磁化强度M或反铁磁性和亚铁磁性介质中的次晶格磁化强度Mi的线性项有关，而且还应与M或Mi的高次项有关。

The formation process of different surface topographies and their micrographic characters in low density polyethylene was studied in this paper.

电介质材料中的空间电荷分布可以改变介质内部的局部电场分布，从而影响介质材料的电导和击穿等过程

Mizumura K,Kumazawa T. Modification of nociceptor responses by inflammatory mediators and second messengers implicated in their actiona study in canine testicular polymodal receptors.

痛过敏的产生有赖于许多炎症介质的参与，如PGs，缓激肽，5-羟色胺和白介素B4等，这些炎症介质有的可敏化伤害性感受器，使它们的阈值降低，有的可激活伤害性感受器，有的具有敏化和激活双重作用[4~6]。

Both of conventional continuous medium mechanics and noncontiguous medium mechanics, having strong pertinence, can abstract and simplify the rock model in research procedure, in which the rock body lying over the coal face can be considered as a static beam or board to leave out the push changes and the changes of property and load during the stability of overlying rock deformation has lost. Hence the derived profile equation is only the approximate expression of final subsidence of surface after the mining finished, and it is difficult to obtain the dynamic subsidence process of rock body.

传统的连续介质力学和非连续介质力学均具有针对性，在研究过程中将岩体模型抽象简化，将工作面上方的岩体看成是一静止的梁、板，省略了工作面的推进变化及覆岩在变形失稳时的性质和载荷的变化，得出的剖面方程仅是开采结束后地表的最终沉陷近似表达式，难以得到岩体的动态沉陷的过程。

The pressure of the medium act against the two valve seats equally in reverse direction, so the pressure on the valve seat is offset, the valve core assumes relatively low pressure when the valve is open, in this way the overlarge displacement is obtained.

双平衡阀座：该阀利用双阀孔设计，介质的压力对两个阀座作用相等，方向相反，介质压力对阀座作用相抵消，阀芯在开阀时压力相对减少，从而获得超大排量。

ABSTRACT The study on experiment and theory on Adsorption and Desorption of Light Paraffinic Hydrocarbons in Real Reservoir Cores at High Temperature and High Pressure is a theme which is of difficult, but of practical and theoretical values, and which also is the foundation of the study on the laws of phase behavior and percolation of gas condensate system in porous media.

高温高压下烃类气体在储层介质表面吸附的实验和理论研究是具有相当难度和较高理论价值和应用价值的前沿性研究课题，是储层介质天然气和凝析油气体系相平衡规律以及渗流规律研究的基础。

The result indicated that: the amount of the excess HF formed direct ratio to the yield of phosphorus pentafluoride and the optimum amount of the excess HF used is about 35%; the trickling rate of oleum shouldnt make the temperature of hexafluorophosphoric acid exceed 25 ℃ and the amount of oleum is 110% to 125% that of stoichiometry so that the content of phosphorus pentafluoride can be achieved 90%; the time and temperature of heating hexafluorophosphoric acid influenced both the yield and the content of phosphorus pentafluoride, and the optimum time should be about 30 minutes and the proper temperature was 148 to 153℃; when alcohol used asrefrigerant, the content of phosphorus pentafluoride was 94.03%, and the content can be up to 97.38%, provided that using liquid nitrogen as refrigerant.

通过实验发现，氟化氢用量与五氟化磷的产率成正比，最佳过量百分率宜在35％左右；发烟硫酸的滴加速度不能使中间产物温度大于25℃，发烟硫酸用量大于理论量10％～25％时，得到的五氟化磷纯度高于90％；六氟磷酸的加热温度对五氟化磷的产率和纯度均有影响，宜在148～153℃的范围内，加热时间应在30分钟左右；用工业酒精做冷凝介质得到的五氟化磷纯度最高只能到达94.03％，使用液氮做冷凝介质可以使五氟化磷的纯度达97.38％以上。

Using the Green function theory, the integral equation of perturbational parameters was obtained.

基于非均匀介质中波函数的局部理论和射线理论，引入了全波场的广义射线近似形式，通过定义介质参数函数，把反演目标归结为其第一类Fredholm积分方程。

Biological samples are very limited usually, and resonant-cavity perturbational method especially fit for the measurement of micro amount samples settled with the limitation of sampling.

通常生物组织的取样数量十分有限，因此微量介质的介电常数测量在生物介质特性测量领域显得十分必要。

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。