变体的

The deformation mechanism is mainly the single-slip and cross-ship, the fracture mechanism is mainly the congregation of transgranular micro-hole, and large uniform deformation occurred before tough fracture, and therefore, the ability of plastic deformation and the mechanical properties of the material were remarkably improved. These fully indicate that the new melt-treatment developed in this work is an effective and advanced technique, and further testify that the improvement of metallurgical quality of the material is the key to enhance its mechanical properties, especially its plastic deformation performance. The results of tensile and compression tests at elevated temperature also indicate that the suitable hot-working temperature range is 400～450℃. 4. A steady-state plastic flow exists during the plastic deformation of the aluminum sheet used for pressure can at elevated temperature. A hyperbolic sine relationship can be satisfied between the steady-state flow stress and strain rate by introducing an Arrhenius term which involves some thermal activation parameters, i.

压力罐用铝材中的主要冶金缺陷为Al〓O〓夹杂物、气孔及富Fe杂质相；高效熔体处理显著改善了材料的冶金缺陷的存在形态，使含杂量明显减少、夹杂物尺寸变细小且分布均匀，富Fe杂质相变为细小、分布均匀的团球状或短棒状的复杂化合物，同时也明显细化了结晶组织；此外，由于高效熔体处理有效地减少了材料中裂纹萌生源数量，因而改变了材料的塑性变形微观过程及断裂方式，主要以单滑移和交滑移进行塑性变形，断裂方式为穿晶微孔聚集型，韧性断裂前产生了大量的均匀变形，不易出现变形失稳，从而显著提高了罐用铝材的塑变能力和力学性能。

The results show that constitutional phases in the 〓 alloy is the same as that in the 〓 alloy, but phase composition and transformation temperatures of two alloys are quite different. The Ms temperature of the 〓 alloy is lower than-180℃. In order to enable the alloy to be used for making pipe couplings, it is necessary to control Al addition and to increase Ti addition in the alloy. In the 〓 alloy, there exist three constitutional phases: TiNi matrix phase with B19′structure,β-Ta phase and NiTa〓 phase. Transformation temperatures, M〓, Ms, As and A〓, of the alloy are 55℃, 66℃, 94℃ and 109℃, respectively.

结果表明，〓合金显微组织的相组成物与〓合金一样，但相成分明显不同，相变温度相差较大，其Ms温度低于-180℃，要想使该系合金用于制作记忆合金管接头，必须控制铝的添加量并提高合金中的钛含量使合金的Ms温度控制在-80℃～-100℃之间；〓合金是由具有B19'结构的TiNi基体相、β—Ta固溶体和NiTa〓化合物三相组成的，其相变温度M〓、Ms、As和A〓分别为：55℃、66℃、94℃和109℃。

The mantle-derived peridotite inclusions with protogranular texture and porphyroclastic textures;(2) the pyroxenite inclusions with cumulate texture; and (3) the granulite and gneisses with crystalloblastic textures.

辽西的深源岩石包体也有三种结构类型：①具有原生粒状结构、残碎斑结构的幔源橄榄岩类岩石包体；②具有堆晶结构的辉石岩类包体；③具有变晶结构的麻粒岩和片麻岩类岩石包体。

As there were 8.69 bivalents in average occurred to be desynaptic, moreover, the most number of the desynaptic bivalents reached 12 at post diakinsis.

从品种轮回422的群体中发现一不育单株，经细胞学观察证明是发生了联会消失突变，由于该植株的花粉母细胞在减数分裂终变期晚期平均有8.69个二价体发生了联会消失，占二价体总数的72.4%，并且发生联会消失的最多二价体数目为12，根据联会消失的最多二价体数目

In this paper, by using the research results of rock permeation mechanics, the author set up the hydraulic model of rock fractures firstly. Then, the author analyzed the current research results of rheology of ordinary portland cement and micro-fine cement grouts, and established the rheological model and the relationship of rheological parameters to hydraulic time.

本文首先借鉴岩体渗流力学的研究成果，建立了适合于研究浆液运动的岩体裂隙模型；然后对现有的水泥浆流变性的研究成果进行了综合归纳和分析，确定了浆液的流变模型和流变参数与水化时间的关系式。

Rheological behaviours have been investigated by means of Haake torque rheometer and AG-10TA universal testing machine. It has been showed that the melt viscosity of PVC/carboxylic ester rare earth salt compound is some greater than that of PVC/organotin mercaptide compound, which can not bring unfavourable consequences at the processing level.

用HAAKE转矩流变仪，AG-10TA万能材料试验机的流变装置对两种稳定剂与PVC的复合物的流变性能进行比较，发现羧酸酯稀土与PVC复合物的熔体粘度在相同实验条件下比有机硫醇锡与PVC复合物的熔体粘度略大，但不会带来加工上的困难。

Gradually, their look changes to bright and deep; the body changes thin and healthy; the action changes to simple and fast; the female changes to slenderer; the man changes to capable; the body is as hiding the detonation strength.

逐渐地，他们的眼神变得明亮而深邃，身体变得瘦削而健美，行动变得简捷而迅速，男子更加精壮，女子更加苗条，体间像隐藏着爆炸般的力量。

OBJECTIVES: To determine the effect of chlamydial infection at various ages on the development of allergic airway disease.

为了确定在不同年龄感染衣原体对变应性气道疾病发展的影响，作者采用新出生的和成年的BALB/c小鼠分别建立衣原体感染和卵蛋白激发的变应性气道疾病的小鼠模型。

The colour, collapse phenomenon and chemical component of the friction surface of powder metallurgy airplane brake materials with different base are studied in this paper.

结果表明刹车材料的抗压强度随基体而变化，刹车材料摩擦面的表观颜色与基体密切相关；基体对刹车材料摩擦面的粘附转移产生重大影响，从而使刹车材料摩擦面的化学成分发生变

In general, this malaria parasites in the mature or nearly mature erythrocytes, schizonts usually large, occurre in mature erythrocytes with more 20 merozoites most commonly arranged in mass.

两性配子体较大，均为长形，雄性配子体有驱核现象，并使寄主细胞膨胀变大；雌配子体较雄配子体长，有一定的包核现象。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。