助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   密度比 的翻译结果: 查询用时:1.744秒
图标索引 在分类学科中查询
所有学科
力学
动力工程
航空航天科学与工程
公路与水路运输
自动化技术
无机化工
有机化工
工业通用技术及设备
核科学技术
更多类别查询

图标索引 历史查询
 

密度比     
相关语句
  density ratio
     The {111}/{100} orientation density ratio of 1.2 mm sheet annealed samples was 2.0~3.0 which was equal to that by etching pit method in laboratory.
     1·2mm板卷退火试样{111}/{100}取向密度比为2·0~3·0,与实验室蚀坑法的试验结果一致。
短句来源
     And the hydraulic and masstransfer tests have been carried out. Results showed that when the diameter of heavy phase weir is 12.5mm, for single stage contactor,the operable ranges are as follows: total flow rate is about 15 ml/min, O/A flow ratio of 0.1~10, rotor speed about 3000~4000 r/min, po/pA density ratio of 0.64?
     结果表明,当重相堰直径为12.5mm时,对单级萃取器,操作范围如下:总流量约15ml/min,转速3000~4000r/min,流比O/A为10~0.1,密度比ρ_o/ρ_A。
短句来源
     And the hydraulic and masstransfer tests have been carried out. Results showed that when the diameter of heavy phase weir is 12.5mm, for single stage contactor, the operable ranges are as follows: total flow rate is about 15 ml/min, O/A flow ratio of 0.1-10,rotor speed about 3000-4000 r/min, O/PA density ratio of 0.64-0.88;
     结果表明,当重相堰直径为12.5mm时,对单级萃取器,操作范围如下:总流量约15ml/min,转速3000~4000r/min,流比O/A为10~0.1,密度比ρ_O/ρ_A为0.64~0.88;
短句来源
     The optimal values of key process parameters are as follows: source pole voltage Vs is 1 200 V ~ 1 300 V, cathode voltage Vc is 200 V ~ 300 V, valid power density ratio K is 4 ~ 5 and gas pressure is 25 Pa ~ 30 Pa.
     工艺参数的最佳值:源极电压Vs为1200V~1300V,阴极电压为200V~300V,有效功率密度比κ为4~5,气压为25Pa~30Pa。
短句来源
     Structure Design of High Power Density Ratio of Airborne Radar Transmitter
     高功率密度比机载雷达发射机的结构设计
短句来源
更多       
  density ratios
     The results show that Reynolds number Re, Weber number We, the density ratios of gas to liquid (Q_a and Q_b) in the inner and outer part of the hollow jet and the ratio of the inner radius to liquid film thickness (A_h) all exert an unstable function in the jet atomization process.
     结果表明:Reynolds数Re、Weber数We、空心柱内部及外部气液密度比Qa和Qb及喷嘴内半径与液膜厚度比Ah,在射流的雾化过程中均起不稳定性的作用;
短句来源
     The physical process of using ECRH to produce sloshing electrons and to form tandem mirror thermal barrier is calculated by means of Fokker Planck kinetic equation. The results show that (1)under certain conditions,the sloshing electron plasma configuration has been formed,the density ratios of which n eh ( Z r)/ n eh (0)=2 15 and the potential dip Δ Ф =16 5V have also been formed;
     对电子回旋共振加热(ECRH)产生晃荡电子形成串级磁镜热垒的物理过程进行了FokkerPlanck动力学计算,计算表明:(1)在一定条件下,晃荡电子等离子体位形形成,其密度比neh(Zr)/neh(0)=215,且形成了ΔΦ=165V的静电势阱;
短句来源
     The effect of cross angles and density ratios on coaxial cross jets flow fields was investigated by using Dual PDA.
     研究了射流交叉角度和密度比对同轴交叉射流流场的影响 .
短句来源
     The coaxial cross jets flow field with two different angles of cross jets and four density ratios has been investigated with Dual PDA. The results show that the angle of cross jet and density ratio have important influence on the flow field.
     采用Dual PDA研究了2种射流交叉角度和4种密度比的同轴交叉射流的流场,发现射流交叉角度和密度比对射流流场有重要影响。
短句来源
     The results show that: (1) The distribution of discharge coefficients is mainly determined by momentum ratio of secondary to mainstream fluid for same geometry, as both momentum and density ratios have been considered.
     结果表明:(1)用二次流与主流的动量比来描述气膜孔流量系数的变化规律较为恰当,该参数可以综合吹风比和密度比的影响;
短句来源
更多       
  density specific
     The optimization design variables were the combustor pressure,mixture ratio,and the outlet pressure of pipe. The optimization objectives were engine specific impulse,payload,engine weight,engine density specific impulse,flight speed at shutting down and engine compositive density.
     以燃烧室压强、混合比和喷管出口反压为设计变量,优化目标包括发动机比冲、有效载荷、结构质量、密度比冲、关机时飞行速度、推进剂综合密度.
短句来源
     However, its lower density specific impulse than liquid oxygen/kerosene engine, inferior safety than kerosene and lower performance than liquid oxygen/liquid hydrogen engine, altogether has limited the development and application of liquid oxygen / methane engine.
     但由于其密度比冲比液氧/煤油发动机低,使用安全性也不如煤油; 性能又比液氧/液氢发动机低,这些都限制了液氧/甲烷发动机的发展和应用。
短句来源
     Ammonium dinitramide monopropellant has higher density specific impulse than HAN based monopropellant,and comparing to hydrazine monopropellant,it almost has the same engine power in pulse mode except the temperature in engine preheator and combustion chamber is a little higher.
     二硝酰胺铵基单组元推进剂比冲高于硝酸羟胺基单元推进剂,发动机脉冲工作能力可与无水肼发动机相媲美,但目前发动机预热温度和燃烧室温度都过高; 高浓度过氧化氢/醇基推进剂比冲为常规推进剂比冲的93%,密度比冲为102%;
短句来源
     Hydrogen peroxide/azido-amine combination is hypergolic bipropellant with high density specific impulse.
     过氧化氢/叠氮胺类不但密度比冲高,而且可实现自燃;
短句来源
  density compared
     With low density compared to the sintered magnet, bonded magnet is good for light weight of electric appliance; meanwhile with the bonder it can be made to products with all kinds of shape;
     而粘结磁体因为其选用了密度比铁氧体小的粘结剂,所以粘结铁氧体比烧结铁氧体密度低,有利于电器整机轻量化,同时由于粘结剂的作用磁体可以任意翦切,制作成各种复杂的形状;
短句来源
     The flux reverses polarities in the stator concentrated coils which leads to higher power density compared with traditional DSPM machine.
     定子集中绕组中的磁通呈双极性变化 ,其功率密度比传统的DSPM电机要高。
短句来源

 

查询“密度比”译词为其他词的双语例句

 

查询“密度比”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  density ratio
Such a flow may be studied using the method of the small parameterε, which characterizes the density ratio across the compression shock [1, 2].
      
A simple qualitative model, a generalization of the well-known Hamel model [6], suitable for any gas density ratio is constructed; a passage in the limit to the strong collision model is demonstrated.
      
The effect of the density ratio of the liquids and the dimensions of the rigid outer shell on the stability of the system is investigated.
      
The critical value of the radius ratio is approximately equal to 1.58 and does not depend on the density ratio of the liquids.
      
The forces exerted on the vortex and the plate and the shape of the interface are determined as functions of the location of the vortex, its intensity, the Froude number, the free-stream density ratio and the velocities.
      
更多          
  density ratios
The total carbon density ratios were also increasing gradually.
      
These shapes depend on different parameters of the problem: the direction of the perturbation wave vector and the fluid layer depth and density ratios.
      
The presence of this mode has led to novel proposals for limiting the degree of instability and optimization of the shells by profiling in the important case of very large density ratios at the ablation front.
      
The segregation process of binary mixture with different density ratios in a granular bed is investigated in this paper.
      
The model also showed that the initial position has only a qualifying effect on the behavior of the unique particle and the initial velocity is only significant at low-density ratios where with higher velocities the lighter particle will rise more.
      
更多          
  density specific
The objective of this article is to investigate the variability in chemical composition, fiber length, and basic wood density (specific gravity) amongst clones.
      
This species has an enlarged cranial cavity (10% of head volume) filled, except for the very small brain, with a low-density (specific gravity 1.008) fluid.
      
A centrifugation method for measuring the relative density (specific gravity) of planktonic rotifers (Rotifera), with values for
      
Stenotomum) to determine the amount of heterosis and the gene action involved in the inheritance of tuber yield, fresh vine yield, total plant accumulation (tuber+vine) fresh and dried, dry vine yield and density (specific gravity).
      
Extensive variability for dormancy and mass density (specific gravity) was also observed.
      
更多          
  density compared
The results indicate that the lower part of the cane shows to have higher basic density compared to the higher part of the cane.
      
The older canes (18 and 24 year-old) show a higher basic density compared to young canes (7 and 11 year-old).
      
This combination of enhanced structural and material biomechanical properties makes PTH an effective treatment for reducing fracture risk despite smaller gains in bone mineral density compared to other osteoporosis agents.
      
Results: Our study revealed a significant decrease in bone mineral density compared to an age-matched and sex-matched normal population (P>amp;lt;0.05).
      
As seen by 2H NMR order parameters, PS bilayers show a much higher packing density compared to PC membranes.
      
更多          
  其他


A general theory of injection of minority carriers in p-n alloy junctions was developed by using one-dimensional model. It was assumed that the recombination rate is proportional to the density of injected carriers. Two extreme cases of low injection levels and high injection levels were first considered, and the result of which was then used as the zero-order approximation in calculating the distribution of the injected minority carriers in p-n junctions. By the method of successive approximation, an analytical...

A general theory of injection of minority carriers in p-n alloy junctions was developed by using one-dimensional model. It was assumed that the recombination rate is proportional to the density of injected carriers. Two extreme cases of low injection levels and high injection levels were first considered, and the result of which was then used as the zero-order approximation in calculating the distribution of the injected minority carriers in p-n junctions. By the method of successive approximation, an analytical expression for the relationship between the injection efficiency and the injection level (i. e. the ratio of the density of injected minority carriers to that of original majority carriers) was obtained. A similar expression for the relationship between the total current density flowing through the junction and the injection level was developed on the same basis. The results of the present theory show that for an ordinary alloy junction transistor, the injection efficiency of the emitter decreases gradually as the emitter current increases. At very high

本文用一维模型计算了p-n合金结中少数载流者的一般注射理论。这里假设复合率是与注入载流者的密度成正比。首先,我们讨论了大注射和小注射的两种极端情况,这样得到的结果被用作零级近似解来计算p-n结中注入少数载流者的分布情况。用逐步近似的方法我们得到了注射效率和注射强度(即注入少数载流者的密度与原有多数载流者的密度之比)间的解析关系。在同样的基础上也得到了通过结的总电流密度和注射强度间的类似关系。这理论的结果表明;对一个平常的合金结晶体三极管来说,当发射极电流增加时,发射极的注射效率逐渐下降。在很大的注射强度下,注射效率趋近于极限值1/(1+b),其中b是电子迁移率与空穴迁移率之比。对一个具有很低注射效率的p-n合金结来说,在注射电流小的时候,注射效率是正比于通过结的总电流;当往射电流很大时,注射效率趋近于极限值1/(1+b)。理论结果还表明,在小注射情下,通过p-n合金结的总电流是正比于注射强度;而在大注射情况下,它是正比于注射强度的平方。

Wir untersuchten die kapillare Dichtigkeit an 6 Aeren der Grosshirnrinde.Die Materialien bestanden aus 6 Gehirnen von Kindern im Alter von 1—2 und 5 Jahren und 2 Gehirnen von Hunden. Diesen 8 Gehirnen injezierten wir Gelatinetusche,bzw.25% Argyrol. 1 Die Kapillaren der Grosshirnrinde und des -markes bildeten zusammen ein dichtes,mitein- ander verbundenes Netz.Die Netzmaschen in der Grosshirnrinde waren enger als diejenigen des Grosshirnmarkes. 2 Die kapillare Dichtigkeit in der Grosshirnrinde war groesser als...

Wir untersuchten die kapillare Dichtigkeit an 6 Aeren der Grosshirnrinde.Die Materialien bestanden aus 6 Gehirnen von Kindern im Alter von 1—2 und 5 Jahren und 2 Gehirnen von Hunden. Diesen 8 Gehirnen injezierten wir Gelatinetusche,bzw.25% Argyrol. 1 Die Kapillaren der Grosshirnrinde und des -markes bildeten zusammen ein dichtes,mitein- ander verbundenes Netz.Die Netzmaschen in der Grosshirnrinde waren enger als diejenigen des Grosshirnmarkes. 2 Die kapillare Dichtigkeit in der Grosshirnrinde war groesser als jene des Markes.Die dur- chschnittliche kapillare Laenge von 6 Grosshirnrindschichten war 3,26:1 im Verhaeltnis zu der Laenge des Grosshirnmarkes.Die an Gefaessmenge mangelnde 1.Schicht besass eine kapillare Laenge,zweimal groesser als die des Markes. 3.Die kapillare Dichtigkeit zwischen 6 Schichten der Grosshirnrinde war ganz verschieden; die 4.Schicht war am staerksten,die 1.Schicht am schwaechsten. 4.Die Blutgefaessverteilung in den 6 Aeren der Grosshirnrinde war im motorischen Rinden- feld am reichsten;im sensiblen Rindenfeld,Schzenrum,Hoerzentrum,frontalem Pole und Riechzen- trum nahm sie stufenweise ab.Dies bedeutet,dass die Blutversorgung des Paloccortex am aermsten war.Dort wo die Nerventaetigkeit am kompliziertesten war,waren die Blutgefaess verteilung relativ reicher.

在6个一至二岁半的童尸和2只狗上用墨汁明胶注射观察了6个大脑皮质分析器核心部的血管密度。1.大脑皮质和髓质的毛细血管形成一个互相紧密联系着的血管网。皮质血管网的网眼比髓质的稠密。2.皮质的毛细血管密度比髓质的大,皮质6层中的毛细血管平均长度与同火面积的髓质毛细血管长度之比为3.26:1。皮质6层中血管量最少的第J层也比髓质的多一倍。3.大脑皮质各层的毛细血管密度不同,在中央前回中,以第Ⅲ、Ⅳ层的血管为最密,最贫乏的是第Ⅰ层。4.大脑皮质6区中以运动分析器核心部的血管密度最大,而感觉分析器、视觉分析器、听觉分析器、额极附近及嗅觉分析器的核心部的血管密度依次减少。这说明旧皮质的血液供给较贫乏,而功能愈繁复的地方,血管亦愈丰富。

1) There are two species of the spotted bollworms, Earias fabia (Stoll.) and E.insulana (Boisd.) as pests of cotton in the cotton growing region of Lukiang. Infesta-tion by the spotted bollworms was very insignificant before 1957, when cotton wasplanted in the spring only. But the infestation due to the spotted bollworms becameworse from 1958--1960, as the cotton plantation system changed, i.e. from the singlespring season cotton changed into the spring seeding cotton, the summer seeding cotton,the fall seeding...

1) There are two species of the spotted bollworms, Earias fabia (Stoll.) and E.insulana (Boisd.) as pests of cotton in the cotton growing region of Lukiang. Infesta-tion by the spotted bollworms was very insignificant before 1957, when cotton wasplanted in the spring only. But the infestation due to the spotted bollworms becameworse from 1958--1960, as the cotton plantation system changed, i.e. from the singlespring season cotton changed into the spring seeding cotton, the summer seeding cotton,the fall seeding cotton, the regenerating cotton and the ratoon cotton since 1957.2) The writers have suggested that the changes in cultural practices is necessary inorder to check the spotted bollworms. These procedures are to rotate cotton and grains,to make early crop, to use resistant strain, and to eradicate wild host-plants, etc.3) The results of the large scale field experiments against Earias spp. by changingagronomic practices in Lukiang during 1961 are very satisfactory. The population ofthe spotted bollworms in January and February was greatly decreased, 99.7 per centless than those of 1960. The moths trapped by molasses in the spring were also re-duced, 99.1 per cent less than last year. The cotton plants were infested much laterand lighter, and the average numbers of larvae on the cotton plants were reduced 65per cent, or even 96 per cent less as compared with those of 1960. Eventually, theyield of seed cotton in Lukiang increased about 30 per cent in that year.

(1)云南保山潞江棉区为害棉花的金钢钻有翠纹金钢钻(Earias fabia(Stoll.))和埃及金钢钻(Earias insulana(Boisd.))两种。在1957年以前该棉区一年只种一季春播棉,金钢钻发生轻微。在1957—1960年,先后采用了春播、夏播、秋播、再生和宿根等多样植棉方式,形成了有利于金钢钻全年取食的食物链索,于是金钢钻发生为害逐年加重,成为棉产事业的重大威胁。 (2)已往大都单独依靠使用药剂防治金钢钻,收效不大。作者等提出改变栽培制度各项措施防治金钢钻。其内容包括改种一季棉实行棉粮输作,促进早熟,改种抗虫品种等,此外也产除野生寄主植物。 (3)1961年在潞江棉区大面积试行改变裁培制度后的情况是:1、2月份冬季虫口密度比1960年减少99.7%。春季用糖浆诱来蛾量比1960年减少99.1%。棉花受害晚而轻,直到7月上旬金钢钻为害盛期,虫口密度仍比1960年减少65%以上,有的甚至减少96%。该地几个公社的单位面积籽棉产量比上年增加30%左右,也显然与虫害减轻有关。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关密度比的内容
在知识搜索中查有关密度比的内容
在数字搜索中查有关密度比的内容
在概念知识元中查有关密度比的内容
在学术趋势中查有关密度比的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社