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It is equipped with a falling prevention support guarantee unit; a lifting arm gyro angle lock unit and a bracket steel rope forced synchronization unit. The trey is low and suitable extensively. The trey is low and suitable extensively.

它具有简洁、合理、选用液压动力单元和油尼龙滚轮结构，升降平稳低噪音，它设有托架防跌落支撑保险、托臂回转角度锁定、托架钢索强制同步装置。

The static model of torsion joint is based on that of bending joint. The effects of structure parameters inside air pressure, initial angle, rube average radius, rube shell thickness on the turning angle are analyzed and the following conclusions are drawn: the relationship between the angle of torsion joint and the inside air pressure is basically linear, the angle of torsion joint increases with the initial angle and rube average radius, the angle of torsion joint decreases while the rube shell thickness increases. The kinetic equation is built for torsion joint. Simulating experiment implies that the time of inflating and deflating process is extremely shorter than that of kinetic process. So the pneumatic process can be ignored in actual system design and control. The factors that affect the dynamic features of torsion joint, such as shell thickness of rubber tube, average radius, initial angle, connector's outlet area, moment of inertia and viscous damping coefficient, are analyzed and the following conclusions are drawn: the change of rube shell thickness has no effects on the dynamic process of FPA inside air pressure while greatly affects the turning angle of torsion joint; when the rube shell thickness is small, the torsion joint has a bigger turning angle, no overshoot and long risetime, when the shell thickness is big, the turning angle of torsion joint is small, but has high response speed, overshoot and low shock; when the rube average radius increases, the turning angle of torsion joint increases and the overshoot increases too; when the initial angle of torsion joint is big, the turning joint is big, the overshoot is small and shock is low, but the risetime is big; the connector's outlet area affects the dynamic process of FPA inside air pressure greatly, but has no effects on the dynamic process of turning angle; moment of inertia and viscous damping coefficient have no effects on the dynamic process of FPA inside air pressure, but affect the dynamic process of turning angle greatly.

在弯曲关节模型推导的基础上，建立扭转关节的静态模型，并分析了扭转关节内腔压力，初始转角，橡胶管平均半径，橡胶管壁厚等参数对关节转角的影响，得出扭转关节的转动角度与充入FPA内腔的压缩气体压力之间基本呈线性关系，扭转关节的转角随初始角度和橡胶管平均半径的增大而增大，扭转关节的转角随橡胶管壁厚的增大而减小的结论；建立了扭转关节的动力学方程，仿真实验表明FPA的充放气过程与扭转关节的动力学过程相比时间极短，在实际系统设计和控制过程中可以忽略不计；分析讨论橡胶管壁厚，平均半径，初始角度，气体节流口面积，转动惯量，粘性阻尼系数等因素对扭转关节动态特性的影响，得出橡胶管初始壁厚的变化对扭转关节FPA内腔压力的动态响应几乎没有影响而对关节转角的响应曲线影响比较明显，壁厚较小时，关节可以得到较大的转角，并且转角的响应曲线没有超调，但上升时间长，壁厚较大时，关节转角变小，响应加快，但是有超调和轻微振荡现象，橡胶管平均半径越大，得到的关节转角越大，但是转角响应的超调量也随之增大，FPA的初始角度越大，关节的转角越大，并且超调量减小，振荡减弱，但是上升时间增大，管接头出口面积的大小对关节FPA内腔压力的建立过程影响较大，但对关节转角的动态响应几乎没有影响，转动惯量和粘性阻尼系数对FPA内腔压力的动态过程几乎没有影响而对扭转关节转角有较大影响等结论。

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。

Moreover, aiming at the complex geological characteristics such as the heterogeneity and anisotropism, etc. of low-resistivity oil/gas reservoirs, the statistics model method and artificial neural network model method are introduced in the low resistivity oil/gas reservoir interpretation and evaluation for the first time.

另外，针对各种低电阻率油气储集层的非均质性和各向异性等复杂地质特征，第一次把统计模型方法和人工神经网络模型方法引入到了低电阻率油气储集层解释与评价之中，并建立起了一套相应的测井解释与评价方法。

Data of body of fluid wrap up reveals those who give this bed to be a model is medium antimonial bed of low tepid fluid, its are into mine fluid in microtherm, low salinity, medium density heats up fluid.

流体包裹体资料揭示出该矿床为典型的中低温热液锑矿床，其成矿流体为中低温、低盐度、中等密度热液。

Owing to many advantages, such as high aperture ratio, high resolution, low cost and low power consumption, LCOS display becomes a promising display technology in recent years.

LCOS技术以高开口率、高分辨率、低价格和低能耗等优点成为近些年最具发展潜力的显示技术。

Owing to many advantages, such as high aperture ratio, high resolution, low cost and low power consumption, LCOS display becomes a...

LCOS技术以高开口率、高分辨率、低价格和低能耗等优点成为近些年最具发展潜力的显示技术。

The main lithology is lithic arkose and the average porosity of reservoir is 8.21%, the average permeability is 0.256×10-3μm2, and the reservoir belongs to low porosity ultra-low permeability, slender throat-micro throat reservoir.

储层的岩石类型为岩屑长石砂岩，储层平均孔隙度为8.21%、平均渗透率为0.256×10-3μm2，属于低孔特低渗、细喉～微喉型储层。

Stepping motor is applied to fuze safety and arming system as a low power motor at low frequency.

步进电机在引信安全系统中是一种小功率的低频应用。

Time is very, very much so-called period of market information is very low, very low confidence, the stabilization fund is the very means for the sake of the mayor's arraignment, to correct the pricing error.

时间是非常非常所谓的市场信息是非常低的时期，非常低的信心，稳定基金是非常手段对市长的传讯为了纠正错误的定价。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！