由于...的缘故

Meanwhile, the concentration of Pb,Zn and other heavy metals is rather high in the oxidation zone and decreasesdownward to levels that are unbelievably low for Pb-Zn mine tailings. Theseobservations suggest that heavy metals should be re-immobilized by secondaryminerals, rather than primary minerals, in the oxidation zone, and could be leachedout from suboxic environment due to low rate oxidative dissolution which preventsthe precipitation of secondary minerals in significant amount. Thus, cover scenarioswhich establish a suboxic environment beneath the cover layer might not always beeffective in preventing heavy metal release from mine tailings.Sequential extraction studies indicate that, in addition to heavy metal leaching,oxidation of the mine tailings increased the mobility of residual Zn, and Cu, while Pb remains immobile due to the formation of anglesite (PbSO4). Using the seven-step extraction technique developed by Dold (J. Geochem. Explor., 2003, 80: 55-68), galena dissolves in significant amount at step 2 most probably due to the strong complexing of Pb2+ by acetate, while other metal sulfides dissolve at step 6, which suggest that this extraction technique could not be used to evaluate the mobility of lead in natural environment

重金属含量均低于新鲜尾矿，但以硬化层中的含量最高(Pb、Zn含量分别为0.47%和0.93%)，往下大幅度降低，表明尾矿风化过程中形成的次生矿物对Pb、Zn等重金属元素有较强的固定作用，而次氧化带的淋溶作用造成了金属元素的大量流失；(4)与新鲜尾矿相比，硬化层中铅的可迁移性大大降低，硬化层之下尾矿样品中铅的可迁移性也不同程度降低，这是由于硫化物氧化产生的硫酸根与尾矿中的铅反应形成铅矾(PbSO_4)的缘故；(5)氧化作用使尾矿中的zn、Cu等重金属的可迁移性不同程度地增大，其中对锌的可迁移性影响最大，铜的可迁移性与铁比较相似，铅则容易与硫化物氧化形成的SO_4~(2-)反应形成铅矾(PbSO_4)；(6)为了减少尾矿污染和修复矿山环境，人们提出了各种不同的尾矿覆盖方案，本文的研究结果表明，这些方法不一定能够有效地阻滞污染元素的迁移。

But realization of inaudibility for audios is much more difficult than realizing invisibility for images, the reason for this is that audio signals are represented by much less samples per time interval compared with images and video.

但是由于人耳听觉系统(Human Auditory System，简称HAS)比人眼视觉系统(Human Visual System，简称HVS)灵敏、以及音频作品的采样点数较少等缘故，使得音频数字水印实现不可感知性比较困难。

According to what graph 2 shows, conductor is still, uniform static magnetic field moves to the left at the speed of , referring to in graph 1 can get , substitute it into Lorentz magnetic force , it is , the negative sign here is not added randomly, it is because the moving direction of magnetic field is opposite to the moving direction of conductor.

如图2所示，导体是静止的，均匀的静态磁场以速度向左边运动，对照图1的，就得，带入洛伦兹磁力中，有，这里的负号不是随意加进去的，而是由于磁场的运动方向与导体的运动方向相反之缘故。

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

It has been busy for me in these two days at the most wonderful time of the year. but,likely to sit in front of the computer when i am feeling something special while as being myself.Christmas is making a bit of a comeback,so we can wish people 'Merry Christmas' instead of 'Season's Greetings'.I have had some figgy puddings on christmas day with Thomas after dinner, I used to call him as a 'fly bird' cause by he is extremely busy to fly around the world, however, it strongly makes me wonder the taste of Glenfiddich 30 year(sherry. fig. dark chocolate), but they have only got 15 year in stock. so. I became like a 'foreign Fig fruit' only got the chance by

今天受到华侨城洲际酒店的邀请来参加圣诞晚宴，现场布置的很宽敞，豪华，高大的圣诞树体现出隆重的节日气氛，以往都是由于工作以及会议的缘故光顾这里，没有机会停下脚步去感受一下周围的环境，不过今天来到这里，感到格外的轻松，晚宴准时开始，一首White Christmas作为隆重的开场，很是气派，听起来是那么的整齐，优美，Paul对大家的欢迎致辞，表现出了由衷感谢以及祝福，席间与列席的各界的精英们畅所欲言，都说酒逢知己千杯少，果不其然，今天我遇到了很多知己，和他们共饮Glenfiddich，他们那雀跃的神情，交谈着感受和体会，让我感受到了格兰菲迪的真谛与智慧给&人&（无论是欧美人，还是亚洲人）带来的影响，很欣慰，并能作为一种文化的传播者，感到无比的荣幸。

This is particularly so when the concentrator has to track a moving incident source,for instance,to track sun in concentration solar power application using fixed target focusing heliostats.

譬如，在新型高倍太阳能聚光，塔式光热发电的应用上，定日镜场的每一台定日镜必须跟踪太阳并将太阳光反射到中央高塔的接收器上；为了提高聚光比和接收效率科学家考虑使用聚光式的定日镜，然而由于太阳跟踪的缘故其聚光器则必须在偏轴聚光的条件下使用，这就带来了光斑阔大即偏轴像差的问题。

I put the VC III through twice as many test wearings as any other shoe I've tested in the four years that I've been running Kicksology.net. This wasn't because I was unsure of how it would hold up over time, it was because I just didn't want to stop wearing it. I'm being completely straight when I say the Shox VC III made me a better player. It allowed me to play with more confidence than I've ever played with before and that gave me a psychological advantage, which in turn translated into a physical advantage. I've since forced myself to move on to other shoes to catch up with my review schedule, but whenever a big game rolls around, the shoe I reach for will be the Nike Shox VC III.

由于经营Kicksology.com的缘故，我穿过了不少的球鞋，但我穿VC3的次数比其他的都多个几次，这并不是因为我担心时间长了这双鞋的表现会有什么改变，而是因为我就是喜欢穿它，这双鞋让我成了一个更好的球员，谁会拒绝一双让自己变得跟好的鞋呢，这就是我打断了我试鞋的计划了，但当我要参加一些正式的比赛时我想到的球鞋还是它—VC3！

Moreover, scanning tunneling microscopy images of the SWCNT with atomic resolution show that it has a (10, 10) structure with a diameter of 1. 3nm and the current-voltage characteristics in quasi-radical direction reveal its metallic properties.

未经过超声的SWCNTs容易凝聚；观察到纳米管弯曲、分岔的现象，这是由于纳米管的六边形网络中引入五边形、七边形、八边形等缘故；得到（10，10）型SWCNT的原子像；测量了SWCNT的准径向I—V曲线，表现为金属性。

This is partlydue to the visual nature of the presentation, andpartly because whiteboards offer ways of activelyengaging pupils in activities.

This由于简报的性质，部分缘故是白板提供积极的方法在activities。

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。