相成

When pH is litmusless, the purification efficiency is the largest. The unhomogeneity of liquid flow results in the uneven biofilm growth. The flow resistance after start-up is significantly larger than that before start-up, whichprovides a method to monitor the biofilm growth.3、The packed bed is simplified to a series of straight capillary tubes covered by the biofilm. The two-phase flow and mass transport, biochemical reaction kinetics, and the limitation of oxygen are taken account of in this model. The results of model are basically in agreement with the experimental data.

通过观察还发现，由于液体分布不均，生物膜在滴滤塔内生长分布不均，并且挂膜后，滴滤塔的孔隙率减小，两相流动阻力比空塔时的大，可采用流动阻力的变化作为判断挂膜成功与否判据。3、首次将多孔填料塔简化成多个竖直毛细管并行排列构成的填料，应用两相流理论，结合生化反应动力学，并考虑氧的限制，建立了一个生物膜滴滤塔降解废气的毛细管模型，其结果与实验数据吻合得较好。

The new division method based on the flow unit conforms with the vadose laws. Therefore, it is quite applicable in the production of the oilfield and hence satisfies the need of exploitation layers adjustment.

这种基于流动单元划分沉积微相的方法是依据储层渗流性质的差异将储层划分成符合其渗流规律的层系，便于同油田开发的生产层系相结合，从而满足层系开发调整的需要。

It is found that before the pearlitic and upper-bainitic reactions, a pro-cutectoid orpro-bainitic phase is precipitated along the austenite grain boundaries in the cyanidedsamples; and it is thought that this is likely a nitrogen-bearing phase which provides thephase boundary effect for the nucleation of the reactions and impoverishes the parentaustenite in alloy content, thus accelerating the transformation of austenite.

实验中发现，在珠光体及上贝茵体形成之前，氰化试样中均有一种过剩相沿奥氏体晶粒边界析出。这种先析相可能是一种含氮的化合物，其析出为珠光体及上贝茵体的非自发形核提供了现成的有利界面，并使奥氏体合金化程度降低，因而加速了转变。

The microstructure evolution of spray formed high silicon aluminum alloy s which arte reheat to semi-solid state and soaped in semi-solid temperature has been studied in this paper.

本文研究了喷射沉积高硅铝合金在半固态保温过程中组织演变规律，结果表明喷射沉积高硅铝合金在半固态保温过程中硅相的粗化符合 Ostwald 粗化规律，数学回归分析表明硅相平均直径的三次方与保温时间成正比例。

A high-resolution Differerntial Thermal Analysis apparatus was used to sinter the mixture of Mg and B powder and monitor the reaction process. Based on the classical sintering theory and multiple scan kinetic analysis method, the formation process and mechanism of polycrystalline MgB2 during in-situ sintering process were systemticlly investigated and the optimal sintering process was determined.

上述研究包含的主要内容和获得的结论有：利用高精度差热分析仪对Mg粉和B粉的混合试样进行烧结处理并同步监控其反应进程，在实验分析的基础上，结合经典烧结理论和多重扫描动力学分析方法，系统研究了原位烧结制备过程中多晶MgB2相的形成过程及成相机理，并确定了最佳烧结工艺。

The results of simulations performed at nearly zero temperature demonstrate that stress-induced phase transitions from body-centered cubic to face-centered cubic and hexagonal close-packed structures take place during the deformation process of both Fe and Ta, and the maximum fraction of FCC atoms varies linearly with the tensile strength, from which we can conclude that a critical stress exists for the phase transition to take place.

低温模拟结果表明，纳米晶铁和钽在变形过程中都出现了应力诱导的相变，其中FCC结构含量的最大值和抗拉强度成线性关系，并由此可以推出相变发生的临界应力值。

Above the transformation temperature,the director softening mechanism is dynamic recovery at low strain rate of 0.001s~(-1),dynamic recrystallization is the primary softening mechanism at 0.01-10s~(-1),and the recrystal grain generated priority at the cross point and grain boundary.

应变速率0.01-10s~(-1)变形时发生了动态再结晶以及部分α相球化，其中α相的再结晶主要与亚晶的形成、转动和聚合成核有关。

The layer of solid KCl is so thin in depth、so small in size、 and so low in grade that it is too difficult to exploite it. Besides that, only 1/3 of the liquid KCl can be expoi ted due to the mining method of well and canal drainage which is being used now. Therefore, it is one of the key problems to exploite the liquid KCl as possible as we can and to turn the solid KCl into explo itable liquid deposit in Qarhan salt lake. So the idea of dissolving and driving exploitation has been suggested. This paper will deal with three problems as follow

然而由于固相矿层薄、品位低而难以直接开采利用，加之目前对液相矿产只是纯疏干性开采，充其量只能采出1/3的液相矿，因此如何最大限度地开采液相矿产，同时将固相矿产转化成能直接开采利用的液相矿产是察尔汗盐湖开采中急需解决的关键问题之一，对此人们提出溶矿驱动开采的设想，本文正是以此为目的，着重研究以下三个问题

In this experiment, the effects of several factors on bromelain activity were investigated.

本文首先研究了构造双水相体系的成相组分及不同操作条件对菠萝蛋白酶活性的影响。

Under the selected separation conditions, a high recovery of bromelain was obtained from the mixed fluid.

通过实验测定了SDS和CTA日水溶液混合体系双水相的相图，考察了温度和外加盐NaBr对双水相形成区域的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。