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成形时间
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  forming time
     The optimum parameters for the SPF process were: forming temperature T_f=930℃,forming pressure P_f=0.6MPa,forming time t_f=55min.
     最佳的成形参数为:成形温度Tf=930℃,成形压力Pf=0.6MPa,成形时间tf=55m in。
短句来源
     The optimum parameters for the SPF process are: forming temperature T=930℃, forming pressure P=0.6 MPa, forming time t=55 min. Microstructure study was carried out with the bonded samples.
     研究表明,最佳的成形参数为:成形温度T=930℃,成形压力P=0.6MPa,成形时间t=55min。
     The forming time of a cone-shaped part(diameter of 154mm) is 73s and nonuniformity of wall thickness is less than 8%.
     在高应变速率条件下,胀形成形大端直径为d154 mm,深度h为80 mm的锥形零件的成形时间为73 s,成形后零件的壁厚变薄的不均匀率小于8%。
短句来源
     The critical forming time has been put forward and several factors which influence forming quality have been studied.
     提出了临界成形时间的概念,并研究了影响成形质量的诸多因素。
短句来源
     Numerical Analysis of Factors Affecting the Forming Time of Superplastic Bulging
     超塑性胀形成形时间影响因素的数值分析
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  shaping time
     Measured results show that the equivalent noise charge is(1 377.1 e) of zero-capacitance noise and 43.7 e/pF of capacitance ratio with a shaping time of 1 μs.
     测量得到的噪声结果为:在成形时间为1μs时,零电容噪声为1 377.1 e,电容噪声斜率为43.7 e/pF。
短句来源
     By carefully selecting the pulse shaping time contants in the electronics and improving the method of data analysis; i.e. as the main amplifier's shaping time was more than 6μs and position signal's shaping time was 0.5—1μs, and used the energy signal as the denominator in the formula of position, better position resolution, energy resolution and position linearity have been obtained.
     通过选择实验中电子线路的脉冲成形时间 ,并改进数据处理方法 ,即主放大器的成形时间常数要大于6 μs,而位置路的时间常数约为 0 .5— 1μs ,且在位置公式中使用能量信号作为分母 ,测试得到了较好的位置分辨和能量分辨及线性。
短句来源
     The relation between energy resolution and coupling area, dimension of crystal, shaping time and biaswere measured.
     并对能量分辨率与光耦合面积及晶体尺寸、成形时间、偏压的关系等进行了测量。
短句来源
     The shaping time of the main amplifier has obvious influence on theposition resolution.
     主放大器的成形时间对探测器的位置分辨有较大的影响。
短句来源
     In this paper, experimental studies on using silicon photodiode as the read-out component of CsI(Tl) Crystal are reported. The read-out properties of two different types of silicon photodiode produced by Hamamatsu were measured, including relations between energy resolution and bias,shaping time, sensitive area of photodiode and the dimension of the crystal.
     报道了硅光电二极管作为CsI(Tl)晶体读出元件的实验研究.测量了日本Hamamatsu生产的两种硅光电二极管的读出性能,包括能量分辨率与偏压、成形时间、灵敏面积和晶体尺寸的关系.
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  molding time
     In this paper, the effects of bead diameter, pre-expansion time, pre-expansion temperature, molding steam pressure and molding time of pattern on the density of expandable polystyrene (EPS) pattern were studied systematically.
     以可发性聚苯乙烯(EPS)模样为研究对象,系统研究了珠粒粒径、预发泡时间、预发泡温度、模样成形蒸汽压力及成形时间对模样密度的影响。
短句来源
     The research results indicated that among these technological factors studied, the influence of pre-expansion temperature on the density of expandable polystyrene (EPS) pattern was greatest, bead diameter and pre-expansion time were next respectively, molding steam pressure and molding time were small relatively.
     结果表明:在所研究的工艺因素中,以预发泡温度对可发性聚苯乙烯(EPS)模样密度的影响最大,其次是预发泡珠粒粒径和预发泡时间,成形蒸汽压力和成形时间的影响相对较小。
短句来源
     And along with the increasing of bead diameter, pre-expansion time, pre-expansion temperature, molding steam pressure or molding time, the density of expandable polystyrene (EPS) pattern decreased.
     随着珠粒粒径的增大、预发泡时间的增加、预发泡温度的升高、成形蒸汽压力的增加或成形时间的延长,模样的密度均呈减小趋势。
短句来源
  “成形时间”译为未确定词的双语例句
     The time of stool forming, diarrhea relieving and fungi vanishing were observed.
     观察两组治疗前后大便成形时间、止泻时间、大便培养霉菌消失时间。
短句来源
     Results:The rate and time of tumor formation in the two cell lines were not related to cell concentration in the range from 5×10 6/0.2 ml to 6×10 7/0.2 ml.
     结果 :在 5× 10 6/ (0 .2 0ml·只 )到 6× 10 7/ (0 .2 0ml·只 )细胞浓度内 ,两株细胞的成瘤率及肿瘤成形时间与接种细胞量无关。
短句来源
     Under the processing conditions of 668 K and 5.0×10~(-4) s~(-1), the incubation time for retaining the glassy phase without decomposition reaches 1 000 s and the largest flow stress is less than 70 MPa.
     在温度为668K、应变速率为5.0×10-4s-1的工艺条件下,非晶合金的可成形时间大于1000s,最大流动应力小于70MPa。
短句来源
     The integral time of main amplifier is selectable. They are 0. 5μs,1μs,2μs, and 3μs. The amplifier offers two gain options , ×10 and ×100. The peak value of output can be holded during 6μs.
     论述了一种小型化的成形放大(主放)与峰保持电路,主放成形时间常数分为0.5、1、2、3μs等4挡,放大倍数分×10、×100两挡,峰保持时间约6μs。
短句来源
     The microforming behavior of Zr_(41.2)Ti_(13.8)Cu_(12.5)Ni_(10)Be_(22.5) bulk metallic glass(Vit.1) in the supercooled liquid region was investigated. The stress-strain relations for Vit. 1 were established in uniaxial compression tests(using) the microforming system.
     采用自行研制的微成形系统进行热压缩实验,分别研究成形温度、成形时间和冲头速度等对尺寸为d1 mm×1.5 mm的Zr41.2Ti13.8Cu12.5Ni10Be22.5块体非晶合金(Vit.1)在过冷液相区微塑性成形性能的影响规律。
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  forming time
Because the given initial40Ar/36Ar value of 294.7±1.14 is very close to Nier's value (295.5±5), both plateau and isochron ages may be considered as the forming time of quartz.
      
The sedimentary-volcanic tuff (locally called "green-bean rock") formed during the early Middle Triassic volcanic event in Guizhou Province is characterized as being thin, stable, widespread, short in forming time and predominantly green in color.
      
First experiments indicate that in the case of Water Jet Incremental Sheet Metal Forming (WJISMF) the forming time, energy efficiency and forming accuracy are rather poor compared to ISMF with a rigid tool.
      
The influence of the main tool trajectory on the forming outcome in WJISMF is observed and optimized in order to reduce the forming time and improve the product quality.
      
The parts formed in this investigation are measured with a coordinate measuring machine (CMM) and results are compared by means of forming time, parts symmetry and achieved geometry, which is defined with the supporting tool.
      
更多          
  shaping time
Calculation and experimental data show that this parameter exerts a significant effect on the selection of the shaping time constants τ of multilayer silicon spectrometers.
      
The Yuexi core differs from the Luotian core in both the intensity and the shaping time.
      
Throughput rates of >amp;gt;100 kc/s are demonstrated for the preloded digital filter at resolutions superior to those of fixed shaping time filters.
      
The gain at the shaper output is 378 mv/fC, theENC is 16 rms at 160 nsec shaping time.
      
In the present prototype, the input-referred Equivalent Noise Charge (ENC) of 990 electrons (rms) for 12 pF detector capacitance with a shaping time of 25 ns and power consumption of 1.4 mW/channel has been measured.
      
更多          
  molding time
In the case presented in this paper, the distribution of temperature fields of the molding model during each time interval was obtained as the simulation proceeded along the molding time by using the 3D FEM with a simple division mesh.
      
The internal bond strength and water resistance of MDF, in particular the degree of thickness swelling (TS), were also improved by prolonged molding time.
      
By changing the length of the molding time it is possible to control the relationship between reversible and plastic types of deformation in plastic ceramic masses.
      
Optimum pressure molding time, average grain size, and dopant concentrations (Li2CO3 + rare-earth oxides) to increase luminescence intensity are specified.
      
Applied pressure and molding time values were chosen based on experimentation for bulk deformation of the material.
      
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The behaviors of vibratory compacting of some kinds of metal powder as Fe, Cu and WC+Co have been systematically investigated on a vibrating punch press refitted from a hydraulic plastic moulding press under conditions of different operating parameters. It is intended to provide a more efficient application of vibratory compacting procss in industrial practice especially to find its way to compact the parts made from hard-and-brittle powders and the parts of large size or/and complicated shape, since these parts...

The behaviors of vibratory compacting of some kinds of metal powder as Fe, Cu and WC+Co have been systematically investigated on a vibrating punch press refitted from a hydraulic plastic moulding press under conditions of different operating parameters. It is intended to provide a more efficient application of vibratory compacting procss in industrial practice especially to find its way to compact the parts made from hard-and-brittle powders and the parts of large size or/and complicated shape, since these parts are difficult to be pressed in good quality by means of conventional hydrostatic pressing. The densification mechanism due to vibratory compacting has also been discussed.Summary . Refitment of press has been proved successfully by the fact that all the actions, such as seperated movements of pressing parts, travels, direction s conversion, consistency keeping of pressure and time delay etc (see fig.3) are performed in a coordinated fashion through hydraulic system and electronic control. Main operating parameters in test were set as vibration frequency f = 50 and 100Hz corrspondnt to the vibrating force Fv=1629 and 6516kg respectively with an amplititude A= 0.3~0.54mm. Under the very same conditions, a comparison resulting from test is made between hydrostatic pressing and vibratiry compacting, and the effects of some main factors (eg. vibrating frequency and time, powder grain size, forming additive and the mode of pressing etc) on the green density of the part to be compacted are studied. It is found that there exist two different cases of pressing in vibratory compacting process. In stasic pressing, ie. the compacting, the pressing pressure is greater than vibrating force, but in impact pressing the pressing pressure is equal to or less than vibrating force. In the latter the green density is rapidly increasing in its initial stage. Conclusions are reached experimentally as follows.--A vibrating time not less than 8~10sec is indispensable to the ma- ximun tap density which results from loose powder and no further densifi-cation will significantly take place thereafter.As a result of the increase in vibration frequency, green density increases with the increase in vibrating force.Size distribution of particles in pressed powder has considerable effect on the compactness of a part being pressed.Different forming additives are necessary to the vibrating compacting of metal powder in accordance with the sort of powder.A mode of compacting that pressing is simultaneously accompanied by vibration is favourable for the d'ensification of powder.As a whole, the test results are bacically in agreement with the known theory proposed by Professor P. Y. Huang, in which the powder being pressed is regarded as a non-linear elastic body in highly deformed state.Fig.1 Schematic of test machine refitted from a 100t hydrostatic plasticmoulding press Fig.2 Schematic of vibration excitorMovement analysis of vibratory compacting--bottom puch;.....top punch; --die.Fig.4 Effact of vibrating time on green density Fig.5 Effect of particle size in powder on green density Tab.1 Pressing pressure required in vibratory compacting in comparisonwith that of hydrostatic pressing Tab.2 Effect of vibration frequency on green - density using reduced ironpowder Tab.3 Effect of different forming additives on green density using reducediron powder Tab.4 Effect of different forming additives on green densities using Feand Cu powders resp Tab.5 Effect of different forming additives on green density using YG8powder

本文介绍了由塑料制品液压机改装的振动模冲式成形压机的结构及利用此装置对Fe、Cu、WC+Co等粉末在各种不同的参数条件下进行的振动成形试验。结果表明:粉末振动成形的压制压力比静压成形时低数十倍,尤其是对m值高的粉末最为显著;边振边压的成形方式和8-10s的振动成形时间、合适的成型剂对粉末致密化过程较为有利。

Based on the theoretical conclusions of the author's papar "The theoretical analysis for superplastic extrusion through cone-shaped dies" that have been proved by experiments, the researches about the forming pattern of superplastic extrusion through cone-shaped dies have been presented in this paper. The tests for the forming of engine pistons have shown that the forming method with varying velocity technology ont only saves one half of the forming time, but also improves the quality of formed parts. The simple...

Based on the theoretical conclusions of the author's papar "The theoretical analysis for superplastic extrusion through cone-shaped dies" that have been proved by experiments, the researches about the forming pattern of superplastic extrusion through cone-shaped dies have been presented in this paper. The tests for the forming of engine pistons have shown that the forming method with varying velocity technology ont only saves one half of the forming time, but also improves the quality of formed parts. The simple graphic method that gives the technological parameters of non-steady extrusion, and the analytic formula for the extrusion time also the material flow rate of extrusion are presented in this paper.

本文是将作者在文献[2]所求得的并经实验验证的理论结果,用于研究锥形模超塑挤压的成形规律。按所得的变速挤压工艺规范进行发动机活塞的成形实验,结果表明:变速成形不但可节省成形时间约二分之一,而且成形件的质量亦有显著提高。文中还给出用图解法确定不稳定挤压工艺参数的简便方法,以及挤压时间和挤压流量的解析表达式。

This article studied the deformation mode during superplastic bulging of conical cup from sheet metal. The forming process was divided into three stages. Based on the fundamental equations of superplastic mechanics and relevant physico-geometric assumptions, the analysis for such a forming process was conducted stage by stage. The equations of optimal loading curves in each stage, the methods for. calculating forming time under different loading conditions, and the theoretical formulae used for computing the...

This article studied the deformation mode during superplastic bulging of conical cup from sheet metal. The forming process was divided into three stages. Based on the fundamental equations of superplastic mechanics and relevant physico-geometric assumptions, the analysis for such a forming process was conducted stage by stage. The equations of optimal loading curves in each stage, the methods for. calculating forming time under different loading conditions, and the theoretical formulae used for computing the minimal thickness and some other geometric parameters of the component to be bulged were derived. Finally, a brief discusson was given.

研究了圆锥杯形件的变形模式,将其成形过程分为三个阶段。根据超塑性力学的基本方程和有关假设,对每一阶段的成形过程进行了分析,得出了各阶段的最佳加载曲线方程,不同加载方式下成形时间的计算方法以及最小厚度等几何参数的计算公式。最后,进行了简短的讨论。

 
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