程度较大的

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。

These phenomena are explained as follows thatduring the hydration of α-hemihydrate gypsum, cations have significance influence on theζpotential of α-hemihydrate gypsum, thereby the dispersed state and the dissolving ratesof α-hemihydrate gypsum are changed. But anions have slight influence because it isdifficult that anions enter the double-layer.

产生这一现象的主要原因是：在α半水石膏的水化硬化过程中，阳离子对α半水石膏的ζ电位产生较大影响，从而改变了α半水石膏颗粒的分散程度和溶解速度；而阴离子很难进入双电层，因此对水化过程的影响较小。

Vacuum was satisfied to the requirement of fresh-cut taro package and benefit to reduce water loss and to inhibit browning. The treatment of insufflate fresh-cut broccoli with 20mg·L-1 6-BA could delay chlorophyll reduction, inhibit ion leakage increasing and slow down the process of senescence. Fresh-cut broccoli packed with the atmosphere combination of 2.5%O2+7%CO2+90.5%N2 had high Vc and high chlorophyll content, and the senescence of the products was delayed certainly. The gas mixture of 5%O2+ 2%CO2+93%N2 could reduce the rate of respiration, chlorophyll decomposition, membrane breakdown and tissue senescence of pakchoi.

真空包装适合鲜切芋头，降低贮藏中鲜切芋头的水分损失，抑制鲜切芋头褐变发生；用20mg·L~(-1)6-BA喷洒鲜切青花菜可推迟叶绿素降解，抑制相对电导率的增加，延缓了衰老；2.5％O_2+7％CO_2+90.5％N_2MAP包装的鲜切青花菜Vc含量较高，叶绿素荧光值也较大，明显延缓了鲜切青花菜的衰老：5％O_2+2％CO_2+93％N_2混合气体抑制了青菜的呼吸作用，降低了叶绿素降解速度，减缓了细胞膜损伤及组织衰老程度。

It is material rule form a contrast with litigation structure, producible rule of evidence.

我国现行刑事诉讼结构因较强的职权干预保证了较高的诉讼效率，刑事证据规则的功能在很大程度上被吸收，当务之急首先是完善交叉询问、举证责任等有关证据运用的程序规则以及确立带有根本意义的自由心证原则，刑事证据规则除已有的规定以外，应主要增补排除传闻证据规则。

Any product can't molding a same thickness. Usually the deeper section may sink mark . To prevent this defect it should set holding pressure, The injection speed of holding pressure step is slow but holding pressure setting within 25-80% depending on sink mark.

任何产品都不同程度的存在一个厚薄不一的问题，正常情况下，较厚的部分都可能存在一个收缩凹陷的现象，为了解决这种现象，就应应用到保压，保压一般来讲都应用较慢的射速，而压力的设置则应看缩水的情况如何，小到25%，大到80%都有可能。

Any product can't molding a same thickness. Usually the deeper section may sink mark . To prevent this defect it should set holding pressure, The injection speed of holding pressure step is slow but holding pressure settingwithin 25-80% depending on sink mark.

任何产品都不同程度的存在一个厚薄不一的问题，正常情况下，较厚的部分都可能存在一个收缩凹陷的现象，为了解决这种现象，就应应用到保压，保压一般来讲都应用较慢的射速，而压力的设置则应看缩水的情况如何，小到25%，大到80%都有可能。

Usually thedeeper section may sink mark . To prevent this defect it should set holdingpressure, The injection speed of holding pressure step is slow butwithin 40.C-60.C, If oil seal work on condition that high pressure anddamaged It's work time will be shorter, it can cause molding stable.

任何产品都不同程度的存在一个厚薄不一的问题，正常情况下，较厚的部分都可能存在一个收缩凹陷的现象，为了解决这种现象，就应应用到保压，保压一般来讲都应用较慢的射速，而压力的设置则应看缩水的情况如何，小到25%，大到80%都有可能。

The result showed that the polarization of populations and gene fluxes are different in different species. The polarization and gene fluxes of populations of 3 Nitavias are lower except N. sphaerocarpa. The heredity coherence of each population is change from 0.8561 to 0.9694. The polarization in the populations is low, and they have the together ancestor. This is similar to morphology and cytology result, so RAPD is a useful supple mentary method in assessing genetic relationship among Nitraria species.

结果表明：白刺属植物的遗传分化程度和基因流因种而异，除球果白刺以外，其余3种白刺的种群间有很大的基因流，其遗传一致度在0.8561~0.9694之间，而种间遗传分化程度较低，故4种白刺有着相近的祖先，这与形态学和细胞学的分析结果一致，说明RAPD分析方法可从分子生物学角度为白刺属植物的系统学分类提供更为有利和可靠的证据。

In order to solve the experimental problem of tricrystal,elastic stress distribution of copper tricrystal under monotonical loading was analyzed by finite element method,the shear stress on slip system in each grain was analyzed.

采用有限单元法计算三晶体在单向拉伸载荷作用下弹性阶段的应力场，分析了三晶体中各晶粒主滑移系上的切应力分布，计算结果表明，当晶界平行于加载轴时，该晶界对其两侧晶粒有很明显的作用，较大程度的改变晶粒滑移系的形式，而且作用程度要超过三晶交点的作用，倾斜晶界则没有明显的作用。

As the caves and cracks developed in the carbonate rocks were usually joined together with the leterite foundation soil and the water acting in the caves and cracks erode the leterite foundation soil,so that the earth cave s be formed in the soil and will lead a building to destroy.

研究结果表明，在抽水降深12m的条件下，虽然教学大楼地基中的岩溶地下水位与基岩面高程比较相近，有可能导致土洞形成，但由于该建筑场地土层厚度较大，胶结较为紧密，粗颗粒含量较多，可在一定程度上抑制土洞向地表塌陷发展的进程。

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。