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primary stage
相关语句
  初级阶段
     5) primary stage.
     5初级阶段
短句来源
     Develop Economy in Villages and Towns with Local Conditions ──The application of the Theory of the Primary Stage of Socialism in Cache District
     因地制宜,发展乡镇经济──社会主义初级阶段理论在草河区的应用
短句来源
     For fundamental aspects consist of justice in socialist primary stage: Equality principle of political status,equality principle of opportunities,absolute equality principle of collective and individual.
     社会主义初级阶段的正义有四项基本内容:政治地位平等原则,机会平等原则,非基本权利与贡献完全平等原则,集体与个人关系辩证统一原则。
短句来源
     There are connections and distinctions between the transformational period and the primary stage of socialism, between the new period of transformation and the new stage of socialist modernization.
     首先,说明中国正处在转型发展新阶段,中国是一个转型的发展中国家,转型发展阶段与社会主义初级阶段,转型发展新阶段与社会主义现代化新阶段既有联系又有区别。
短句来源
     However, the research of applying microarrays technology to plant virus detection is still at the primary stage.
     但目前基因芯片技术(寡核苷酸微阵列)应用于植物病毒检测仍处于研究的初级阶段
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  “primary stage”译为未确定词的双语例句
     The decreased nm23-H_1 expression, and/or the increased MMP_9 expression in primary stage Dukes B tumors were significantly associated with LNMM (P<0.05). Sensitivity and specificity for detection of LNMM by using nm23-H_1 or MMP_9 were respectively 62.5% and 81.8% or 75.0% and 69.8%.
     nm23H1表达下降和(或)MMP9表达增强与LNMM相关(P<0.05),两者预测大肠癌LNMM敏感性和特异性分别为62.5%和81.8%、75.0%和69.8%,联合检测特异性则达90.9%;
短句来源
     The Avrami equation can be used in the primary stage of isothermal crystallization process. For the isothermal crystallization,the Avrami index was 2.51- 2.87,the activation energy-131.9 kJ/mol.
     Avrami方程可以适用PA1212的等温结晶过程,其Avrami指数为2.51~2.87,等温结晶活化能为-131.9 kJ/mol;
短句来源
     We confirm that the grinding fineness of the mixing-ore mineral processing is the primary stage 70%-0.074mm and the secondary stage 85%-0.074mm.
     试验确定混合矿样的磨矿细度一段70%-0.074mm,二段85%-0.074mm;
短句来源
     But in ineffective group,the signals transductions were restrained at the primary stage on PR,ER,EGFR(P<0 01),AI value was 0 11%.
     失败组信号传导受抑主要为PR、ER和EGFR(P <0 0 1) ,AI为 0 11%。
短句来源
     Results: VEGF was negative in all benign nevi, while the VEGF positive rates in primary stage, invasion phase, invasion and metastatic phase, metastatic phase and resting phase of the cutaneous melanomas were 33.3%, 73.1%, 87.5%, 89.3% and 50%, respectively.
     结果:VEGF在所有黑素细胞痣中表达阴性,而在皮肤恶黑的初始阶段、侵袭阶段、侵袭转移阶段、转移阶段、未转移阶段阳性率分别为33.3%、73.1%、87.5%、89.3%及50.0%。
短句来源
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  相似匹配句对
     On Socialism at Its Primary Stage
     论初级阶段社会主义
短句来源
     5) primary stage.
     5初级阶段。
短句来源
     The Stage
     舞台上下
短句来源
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  primary stage
During the primary stage, the melt is partially desulfurized while oxygen dissolves in the liquid sulfide.
      
It is proposed that chlorine diffusion in the gas phase boundary layer controls the rate during the primary stage of the reaction.
      
The chlori-nation was found to proceed with a fast primary stage, with an apparent activation energy of 15.3 kJ/mol, followed by a slow secondary stage.
      
It was shown that dissolved hydrogen promoted the creep of this alloy at room temperature, markedly increasing both the creep strain and rate in the primary stage.
      
Creep curves obtained in the three regions exhibit a normal primary stage, but the extent of the stage is less pronounced in region II than in regions I and III.
      
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In addition to the aa and β relaxation amorphous samples show a dielectric maximum at 120-130℃ due to the crystallization of the sample during temperature scanning. A dielectric method of characterizing the process of isothermal crystallization of PET in the temperature range of 97-113℃ has been demonstrated. During the primary stage of crystallization the change of e' with time obeys the Avrami equation, that is, ε'(t)- ε'(∞)/ε'(0)-ε'(∞) =" exp(-Ktn) with n - 2 in the temperature range studied. During...

In addition to the aa and β relaxation amorphous samples show a dielectric maximum at 120-130℃ due to the crystallization of the sample during temperature scanning. A dielectric method of characterizing the process of isothermal crystallization of PET in the temperature range of 97-113℃ has been demonstrated. During the primary stage of crystallization the change of e' with time obeys the Avrami equation, that is, ε'(t)- ε'(∞)/ε'(0)-ε'(∞) =" exp(-Ktn) with n - 2 in the temperature range studied. During secondary stage of crystallization the dielectric relaxation strength △ε determined from the Cole-Cole plote decreases while the Cole-Cole β parameter increases in the course of crystallization.

非晶态PET的介电性质温度谱除α_a松弛和β松弛外,在120—130℃之间由于在升温过程中试样的结晶出现一个损耗峰。比较非晶态试样与结晶后试样介电常数ε′和介电损耗ε″的差别,可在97—113℃温度下用ε′和ε″来表征非晶态PET的等温结晶过程。在结晶的初期,ε′随时间的变化符合Avrami方程,即(ε′(t)-ε′(∞))/(ε′(0)-ε′(∞))=exp(-Kt~n)。在结晶的后期,由介电性质的频率谱Cole-Cole图观察介电松弛强度△ε和β参数在结晶过程的变化。

Systematic obsorvations were made on 25 chicks each In lots fed tne deficient basic diet (1) and Se (2), +Vitamin E (3) and semi=synthetic diet(5). Symptoms startea from the 2nd week of age and peaked at 3-5 weeks. Mrbiity averaged 88%, mortality up to 70%. Clinical symptoms were manifested in three stages: Primary stage (2nd week) No specific clinical sign, only lislesslack of appetite and minor changes in nutritive state. Transitive stage (2-5 week) Obviour outward signs such as change...

Systematic obsorvations were made on 25 chicks each In lots fed tne deficient basic diet (1) and Se (2), +Vitamin E (3) and semi=synthetic diet(5). Symptoms startea from the 2nd week of age and peaked at 3-5 weeks. Mrbiity averaged 88%, mortality up to 70%. Clinical symptoms were manifested in three stages: Primary stage (2nd week) No specific clinical sign, only lislesslack of appetite and minor changes in nutritive state. Transitive stage (2-5 week) Obviour outward signs such as change in posture, digestive disorder, Iocomotive and balaace derangements, neuro-symp-toms and shock. Terminal stage Those lightly affected would recover naturally with retarded growth and emaciation, which might be compansated. Thnoe heavily afflicted woul lie prostrate, unconscious and tetanic until death. No one case was however typical in syndrome, so that clinical signs were not conducive to diagnosis. For decisive diagnose, one should resort to multi-criterial measures an the flock.

对第一、二、三和五组的共100只雏鸡进行了系统临床观察。结果表明,试验雏鸡自第二周龄开始发病,3—5周龄达发病的高峰。发病率平均为88%,死亡率达70%。症状的初期阶段(二周龄内):多无特征性的临床表现,仅有精神、食欲与营养的轻度变化。中期阶段(2—5周龄间):症状逐渐明显化。主要表现为整体状态的改变及消化功能紊乱,运动障碍及平衡失调,神经症状及休克发作等。后期阶段:轻者因自然耐过而典型症状消失,只留有明显的发育落后,瘦弱或逐渐恢复。重者至濒死期多卧地呈昏迷状态或痉挛而死。但每个具体病例的临床表现多不全面,症状又多缺乏特征性意义,因此,必需着眼于群体的综合诊断,才能达到确诊。

The effect of volume fraction and size of fine γ' on creep strength of a directionally solidified nickel-base superalloy——DSK3 at 760℃ has been examined. DSK3 was solution heat treated at 1100—1270℃ to homogenize the alloy and dissolve coarse γ' and eutectic γ—γ' constituents which subsequently reprecipitated in the form of a uniform fine γ' dispersion with various volume fractions (0.25—0.63) and different sizes (0.1—0.3μm) upon cooling and aging. The size and amount of fine γ' increased with the increase of...

The effect of volume fraction and size of fine γ' on creep strength of a directionally solidified nickel-base superalloy——DSK3 at 760℃ has been examined. DSK3 was solution heat treated at 1100—1270℃ to homogenize the alloy and dissolve coarse γ' and eutectic γ—γ' constituents which subsequently reprecipitated in the form of a uniform fine γ' dispersion with various volume fractions (0.25—0.63) and different sizes (0.1—0.3μm) upon cooling and aging. The size and amount of fine γ' increased with the increase of solid solution temperature. The creep rupture life increased and the secondary creep rate decreased as the solution temperature increased and the relationship t_f and e at 760℃ can be expressed as:(?)~αt_f=c where a=1 and c≈5.5. The improvement of creep rupture life was found to be due to a decrease of secondary creep rate and an extension of secondary stage of creep. The secondary creep rate (?) is strongly dependent on size a, interparticle spacing λ and volume fraction v_f of fine γ', and it takes the form:(?)∝α/v_f~(2/3)(1-v_f~(1/3)) or (?)∝λ~2/αThe dislocations structure and morphology of γ' of the alloy produced by creep to primary, secondary and tertiary stage at 760℃ under 73.8 kgf/mm~2 and 78 kgf/mm~2, and at 950℃ under 25 kgf/mm~2 was examined in TEM. During the primary stage of creep at 760℃ under 73.8 kgf/mm~2 or 78 kgf/mm~2 dislocations are moving between the γ' cuboids shearing the γ matrix. Two sets of dislocations intersecting or reacting each other in the γ matrix are visible, but no dislocation is ever observed inside the γ' cuboids. A dense 3-dimensional dislocation network has formed in the γ matrix of the alloy during secondary creep. A few superlattice dislocation pairs were found in the γ' at 760℃ under 78 kgf/mm~2, but still no dislocation in the γ' under 73.8 kgf/mm~2 is observed in secondary stage of creep.The morphology and size of γ' are changing during creep at 950℃ under 25 kgf/mm~2, especially at the end of secondary stage of creep and during tertiary stage of creep. In the early primary stage of creep dislocation structure is similar to that at 760℃ but two sets of α/2<110> dislocations can react more easily and form a 2-dimensional dislocation networks covering the γ—γ' interface in the later primary stage of creep. γ' particles start to coarsen and become a plate shape by lateral merging of cubes without noticeable thickening of the plates from secondary stage of creep.Direct observation of dislocation structure and γ' morphology in relation with secondary creep rate suggests a high temperature creep model for the nickel-base superalloy in the range of temperature and applied stress where shearing of the γ' phase does not control the straining process. During secondary creep, strain is mainly the result of climb rate of dense 2- or 3-dimensional dislocation networks and the free path of dislocation glide in γ. Secondary creep rate (?) can be described as:(?)=NAbR where N is the density of dislocation sources; A the sweeping area of a dislocation, b the magnitude of the Burgers vector of the dislocation and R the climb rate of the dislocation over γ' particle or the number of critical link length of dislocation network can be developed to operate in a unit time, i. e., the number of operating sources of the dislocation in a unit time.The volmne fraction v_f and size of γ' will play an important role in secondary creep rate (?) by changing the configuration and density of the dislocation and influencing the process of the dislocation climb (recovery) in γ matrix. Applying the following equation relating the applied stress and dislocation density ρ to creep process:σ= σ_0+αGbρ~(1/2) where G is the shear modulus, α the strengthening proportional constant by the interaction of dislocations and σ_0 flow stress due to all causes other than dislocation-dislocation interaction, and combining climb model given by Anscll and Weertman the equation for secondary creep rate (?) can be derived as:(?)=K/G~3T λ~2/α(σ-σ_0)~n exp(-Q_s/RT) or (?)=K/G~3T α/v_f~(2/3)(1-v_f~(1/3))~2(σ-σ_0)~n exp (-Q_3/RT) where K is a constant, Q_s the activation energy for self-diffusion, and n=4—5. The expression relating λ, α, v_f and (?) predicted by the theory agrees satisfactorily with experimental results.

本文研究了定向凝固K3镍基高温合金的蠕变强度与细小γ′粒子的数置和尺寸的关系。实验结果证明,随着固溶温度升高,铸态粗大γ′逐步溶解并在随后冷却过程重新析出均匀细小正方形的γ′粒子。细小γ′体积分数(v_f)和尺寸(α)都随固溶温度的升高而增大,当固溶温度从1100℃升至1230℃,v_f从0.25增至0.63,α从0.10μm增至0.32μm。随着固溶温度的升高,第二阶段蠕变速率降低,持久寿命延长,大幅度提高合金的蠕变性能。适当的高温固溶加时效处理(如1210—1230℃,4h+900℃,32h)可提高定向凝固合金的中温(760℃,73.8kgf/mm~2)持久寿命10倍左右。合金的中温蠕变性能取决于细小γ′的体积分数(v_f),尺寸(α)及其间距(λ),在固定温度和应力下,第二阶段蠕变速率((?))与它们之间符合以下关系。 (?)∝λ~2/α或(?)∝α/v_f~(2/3)(1-v_f~(1/3))~2 用透射电镜观察了合金三个蠕变阶段位错亚结构的变化,据此提出蠕变的位错模型和合金的强化机制,并导出第二阶段蠕变速率与γ′体积分数、尺寸和间距之间的关系式,与实验结果完全符合。

 
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