分数的
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The results under the oil lubricate friction conditions were similar with those under the dry friction conditions. The wear mechanism of 3Cr13 matrix alloy was micro-cutting and distorting wear. For the composites with a low fraction of TiC particle, distorting wear dominated and cutting was partly operating. For the composites with a high fraction of TiC particle, stress fatigue wear and wear of hard phase decohesion has occurred, but the main wear mechanism was still distorting wear. When the wear experiments were performed under the oil lubricate friction conditions, the main wear mechanism has became to abrasive wear and fatigue wear for the composites with the low TiC fraction, and fatigue wear would be to dominate for the composites with the high TiC fraction. There were similar wear mechanisms in H13 and 1Cr18Ni9 matrix composites.
在干摩擦条件下,3Cr13基体合金的磨损机理为显微切削和变形磨损;低体积分数的复合材料磨损机制以变形磨损为主,兼有少量的切削磨损机制;高体积分数的复合材料磨损机制以变形磨损为主,兼有应力疲劳磨损和脆性相剥落磨损;在油润滑摩擦条件下,3Cr13基体合金的磨损以磨粒磨损为主;低体积分数的复合材料磨损为磨粒磨损和疲劳磨损;高体积分数的复合材料磨损以疲劳磨损为主。H13、1Cr18Ni9基体及其复合材料的磨损机制类似于3Cr13基体及其相同体积分数的复合材料。
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The results show that the vague point of gasoline and ethanol increase as the increasing water content of ethanol without adding the additives; dispersant can evidently decrease the gasohol's va...
结果表明,无分散剂时,随着乙醇中水的体积分数的增加,乙醇汽油的分层温度逐渐升高;加入主分散剂可以显著降低乙醇汽油的分层温度,而少量助剂B、C可显著改善主分散剂A1的助溶效果;随着分散剂体积分数的增加,乙醇汽油的分层温度逐渐降低;在乙醇体积分数为10%,乙醇中水的体积分数为4.3%,分散剂的体积分数为2.91%,其组成V(A1)∶V∶V为90∶7.5∶2.5时,乙醇汽油的分层温度可达到-25℃。90号汽油的辛烷值调合后提高到93号,且其T10和T50点均较调合前低。
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Deformation greatly promoted carbonitride isothermal precipitation and made C-curve shift leftwards. The position and shape of C-curve depended on the content of Nb and N to a great extent, C-curve shifted leftwards a little when N content increased and its nose temperature was raised with Nb content increased. 3 when cooling rate increased, start temperature and finish temperature of continuous cooling precipitation decreased, full precipitation became difficult to take place, the volume fraction of carbonitride precipitation decreased, molar fraction of Nb and C dissolved in austenite increased, and the precipitation grain was further refined. Deformation shorten precipitation start time during continuous cooling, raised precipitation start temperature, accelerated precipitation kinetics of carbonitrides.
计算表明:1在Fe—Nb—C系统中,随着温度的降低,析出相的平衡体积分数增加,溶解在奥氏体中的Nb、C的摩尔分数降低,析出相中C和Nb的原子分数的比值v增加;2变形大大促进了碳氮化物的等温析出,使C曲线左移,Nb和N的含量与C曲线的位置和形状有一定的关系,N含量的增加,使C曲线略有左移,而Nb的含量的增加使得C曲线的鼻子区上移;3随着冷却速率的增大,连续冷却析出的开始温度和结束温度均有所降低,并且析出变得越来越不充分,析出相体积分数明显减小,溶解在奥氏体中Nb和C的摩尔分数增大,析出相粒子被明显细化,变形大大缩短了CCP过程碳氮化物析出的开始时间,提高了析出的开始温度,促进了析出动力学。
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The results showed that the fiber had the function of absorbing toluene and trichloroethylene after introducing HEMA into macromolecules, and the absorptive process obeyed Hill equation of sigmoidal model.Toluene and trichloroethylene absorbency increased with the increase of mass fraction of HEMA,and their maximum absorbency was 10 g/g and 21 g/g,respectively.The ratio of remaining fiber also increased with the increase of mass fraction of HEMA to make organic liquid retention ratio strengthen.Furthermore,dynamic mechanical performance of the fiber was affected by mass fraction of HEMA obviously, and the segments movement was influenced more obviously.At the same time,mass fraction of HEMA had a great impact on the surface and cross section morphologies,especially,many cavities existed in surface, and cross section had a lot of holes with asymmetric size when mass fraction of HEMA was equal to 15 wt%.
结果表明,HEMA引入大分子后,所得纤维对有机液体甲苯、三氯乙烯具有吸附功能,且吸附过程符合sigmoidal模型中的Hill方程;随HEMA质量分数的增加,纤维对甲苯和三氯乙烯的饱和吸附量增大,对甲苯和三氯乙烯的最大吸附量分别可达10 g/g和21 g/g;随HEMA质量分数的增加,纤维剩余率增加的同时,使纤维对甲苯和三氯乙烯的握持能力增强;HEMA质量分数对纤维动态力学性能有突出影响,特别是链段运动受其影响更为明显;HEMA质量分数对纤维表面和断面形貌均有显著影响,特别是当HEMA质量分数为15 wt%时,所得纤维表面出现了许多空洞,其断面存在许多尺寸不均的空洞。
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The results of changes of endogenous hormone contents at early stage of floral differentiation in cotyledonary nodes of cucumber seedlings after decapitation were as follows: The contents of IAA and ZT in cotyledonary nodes of the cucumber seedlings within 0~4 d after decapitation decreases while the level of GA3 first increases then declines within 1~3 d, after that it increases again.
对花芽分化初期子叶节中内源激素质量分数的测定表明,IAA质量分数在花芽分化初期处於较低水准,ZT质量分数呈下降趋势,GA3质量分数则出现升-降-升的波动状态。
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Results In vitro recovery of the probe was mainly influenced by the perfusion rate. When the perfusion rate was set at 1.0μL/min, in vitro and in vivo recoveries of the probe were 50.16±2.34% and 14.096±0.58%, respectively. The enhancement indexes for 3%, 5% mentha oil were 3.8 and 17.6, respectively. The enhancement indexes were 9.2 and 24.8, for 3% and 5% of Azone, respectively. Conclusion The steady sate flux of meloxicam in rats is significantly improved by enhancer mentha oil and azone.
结果: 在实验条件下微渗析探针的体外回收率主要受灌注液流速的影响,为(50.16±2.34)%;反向渗析法测得探针的在体回收率为(14.096±0.58)%;MO的体积分数为3%和5%时,增渗倍数分别为3.8,17.6;azone的体积分数为3%和5%,增渗倍数分别为9.2,24.8;结论:不同体积分数的MO和azone均可显著增加美洛昔康经皮渗透稳态流量,azone的体积分数为5%时,大鼠角质层的屏障作用可能受到了较大程度的破坏。
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The experimental results show that the distributions of content and toxicity equivalent quantity of PAHs in raw coal are similar to coal gasification but this compositions and contents are different. The rise of coal rank leads to the decrease of the content and TEQ of PAHs in raw coal and the increase of TEQ during coal gasification, while the content of PAHs emission from coal gasification increases first and then decreases with the increase of coal rank. The total PAHs contents generated in coal gasification of some sorts of coals are higher than in raw coal. The types of PAHs formed in coal gasification include undecomposed PAHs in raw coal, pyrosysthensis PAHs, and radical polymerization PAHs at high temperature.
试验结果表明:煤气化前后多环芳烃质量分数和毒性当量质量分数的分布特徵相似,但多环芳烃的组成和质量分数不同;煤化程度增加,原煤多环芳烃质量分数和毒性当量质量分数减小,煤气化多环芳烃质量分数先增后减,毒性当量质量分数与煤化程度呈线性关系;部分煤种气化多环芳烃的质量分数高於原煤多环芳烃质量分数,且煤气化多环芳烃的种类分为原煤未分解的多环芳烃、热解合成的多环芳烃、自由基高温缩合生成的多环芳烃。
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Results showed that, with cadmium concentration and stress time increasing, the chlorophyll content in the leaves of the three fruit tree species declined, and the decreasing range was in the order of apricot, plum, and pear from high to low; relative conductivity of the leaves showed an increasing tendency; MDA content first decreased and then increased; POD activity first increased and then decreased; proline content also exhibited an increasing tendency.
结果表明:3个树种随着重金属质量分数和胁迫时间的增加,各树种叶片的叶绿素质量分数降低,其中杏树的降幅最大,李树居中,梨树最小;相对电导率有逐渐升高的趋势;叶片MDA质量摩尔浓度均出现先降低后升高的趋势;POD活性随土壤中镉质量分数的增加先升高后降低;脯氨酸质量分数随着重金属胁迫时间的延长有不断积累的趋势。
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Results showed that the activity of soil poly-phenol oxidases and acid phosphatase, and soil respiration were suppressed by Starane at 0.5 and 5 mgkg^(-1) dry soil, respectively, during the first several days of experiment, but were slight promoted thereafter. In contrast, treatment with Starane at 50 mgkg^(-1) stimulated at the beginning of experiment but inhibited following that time the activity of soil poly-phenol oxidases and acid phosphatase and soil respiration. Activity of urease was stimulated at the beginning but inhibited in the following days by Starane at 0.5 and 50 mgkg^(-1) dry soil, respectively. However, the pattern of stimulation of urease activity at first several days of experiment followed by reduction to the basil level was observed. With respect to invertase, its activity was constantly depressed in the presence of Starane.
结果表明使它隆在0.5mgkg^(-1)和5mgkg^(-1)质量分数时对土壤多酚氧化酶、酸性磷酸酶和呼吸强度的影响为轻微抑制-激活-恢复稳定的趋势,50mgkg^(-1)质量分数时为轻微激活-抑制-恢复稳定的趋势;使它隆在0.5mgkg^(-1)和50mgkg^(-1)质量分数时对土壤脲酶活性的影响为激活-恢复稳定的趋势,5mgkg^(-1)时则处于抑制-激活的趋势;各质量分数的使它隆浓度对土壤蔗糖酶和土壤全酚均为抑制作用,且质量分数越大抑制越强烈。
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In this paper we proposed a hypothesis of difference fiber volume fraction and presented expressions respectively. The fiber volume fraction of unit cell is not equal to that of each lamina, which need calculate eachly. The paper also advanced conception of weighted average of three cell's stiffness.
本文提出了差别纤维体积分数的假设,各个纤维束的纤维体积分数与单胞的纤维体积分数并不相等,需要分别进行计算,并分别给出了各纤维束的纤维体积分数计算式;还提出了三单胞弹性模量按比例叠加的思想,并给出了比例计算式,计算出了结果。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。