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strength value
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  强度值
     the highest strength value is obtained as welding velocity is at 60 mm/min,and it is 82% of that of base metals.
     其中焊速60mm/min时可得到强度最高的接头,其强度值是母材强度的82%。
短句来源
     This article describes the relationship between the hardness and the strength of metal material. The strength value of metal material can be approximately calcu- lated based on the hardness value with the conversion for- mula:σs=3.28HV-221 andσb=3.55HB (applicable to metal material with HB≤175).
     阐述了金属材料的硬度与其强度的关系,根据金属材料的硬度值,可以近似求出其强度值,换算式为:σ_s=3.28HV-221,σ_b=3.55HB(适用于HB≤175的金属材料)。
短句来源
     Results: The flexural strength value obtained from thepolishing and self-glazing groups were 26.25Mpa and 20.31Mpa.
     结果:抛光组挠曲强度值为26.25Mpa,自上釉组为20.31Mpa。
短句来源
     Results: The average flexural strength value obtained from the ion exchange and control groups were 31.52 Mpa and 20.31 Mpa.
     结果:①离子交换组的挠曲强度值为31.52Mpa,对照组为20.31Mpa。
短句来源
     Cement 28 d compressive strength value is the gist to ascertain cement compressive strength grade and concrete quality grade.
     水泥28 d强度值是确定水泥强度等级和砼质量等级的依据。
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  强度参数
     In this paper, the method of calculating rock shear strength value, C,f with the M robust estimate is presented, the calculating model and method are given.
     提出了M-稳健估计计算岩体抗剪强度参数C,f值的计算模型和方法。
短句来源
     Secondly. differ-ent criteria of strength value adoption were taken according to different conditions of roughness incombination with the integration of both single point method and multipoint method, calculationof single point shear strength parameters was used.
     其次,据不同糙度情况,采用不同强度取值准则,并通过单点法和多点法相结合途径,使用了单点抗剪断强度参数计算方法。
短句来源
     Shear strength value of rock mass of slope is one of the important geological factors affecting stability of slope.
     边坡岩体抗剪强度参数是影响边坡稳定性的主要地质因素之一。
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  “strength value”译为未确定词的双语例句
     C/C composites with 30% fiber volume fraction have higher strength value than that of with 40% and 25%.
     30%纤维体积含量的C/C复合材料较40%和25%纤维体积含量的C/C复合材料具有更佳的力学性能。
短句来源
     At 800℃, the samples of consolidated powders that are milled for 1 h present the maximum compressive yield strength of up to 620 MPa after sintered for 4 h at 1 250℃, which is in the vicinity of its strength value at room temperature.
     球磨1 h粉末挤压坯经1 250℃烧结4 h后,800℃时的压缩屈服强度最高,达到620 MPa,且与其实温值相当;
短句来源
     The flexural strength value of 113.7MPa, and the fracture toughness value of 1.53MPa·m1/2. Show the reinforced effects to be very obvious.
     材料的抗弯强度达到113.7MPa,断裂韧性为1.53MPa·m1/2,补强增韧效果明显。
短句来源
     The EVA/MH ( 40%/60%) blend showsexcellent rheological and mechanical properties with a balancetorque value at 12.7 N(m, a tensile strength value at 10.1MPa, and a elongation at break value at 1 150%.
     氢氧化镁填充量为60%的EVA混合物的转矩流变性能和力学性能均优秀,平衡扭矩为12.7N·m,拉伸强度为10.1MPa,断裂伸长率达到1150%。
短句来源
     The strength of SiC/Si ceramic composites which was measured by three-point bending test, was 290MPa, which attained the strength value of the ordinary reaction-bonded SiC ceramics.
     SiC/Si陶瓷复合材料的强度高达290 MPa,达到了常规反应烧结SiC陶瓷的强度水平;
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  strength value
The increased strength value at the lower FRT is due to the finer lath width and packet size of martensite.
      
The increased strength value at the lower FRT is due to the finer lath width and packet size of martensite.
      
The results of the as-coated 80Ni-20Cr specimens showed an adhesive-strength value of 68 MPa.
      
The investigation has also shown that Ti5Si3 maintains a high yield strength value up to 1200 °C.
      
The micromechanical behavior of these specimens under transverse loading was examined by finite element analysis using this interface bond strength value and compared with experimental observations.
      
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Most of the ceramic materials, because of their inherent brittleness, are susceptible tothermal stress fracture. According to fracture mechanics theory, thermal stress fracture includ-es processes of flacture intiation as well as of continued crack propagation.of the two,crack propagation is more detrimental.It has been proposed that crack propagation occurs kinetically with total area of crack propagation inversly proportional to thermal shock re-sistance parameter, e. g.R≌(K_(1c)/σ_f)~2, where K_(1c) is the...

Most of the ceramic materials, because of their inherent brittleness, are susceptible tothermal stress fracture. According to fracture mechanics theory, thermal stress fracture includ-es processes of flacture intiation as well as of continued crack propagation.of the two,crack propagation is more detrimental.It has been proposed that crack propagation occurs kinetically with total area of crack propagation inversly proportional to thermal shock re-sistance parameter, e. g.R≌(K_(1c)/σ_f)~2, where K_(1c) is the critical stress intensity factor,σ_f, isthe tensile strength. In order to investigate this relationship,the critical stress intensity factor and the ther-mal shock resistance parameter of three types of alumina ceramics with different micro-structures were compared with their strength losses over a wide range of quenching tempe-rature difference (200℃<ΔT<1200℃) .Because of their structural weakening at grain boun-daries, type T-Al_2O_3 samples, which fracture almost in a completely intercrystallilae man-ner, have strength values considerably lower than those of type P-Al_2O_3 and type Ⅱ-95-Al_2O_3 samples. Nevertherless, their K_(1c) values are somewhat higher than those of type Ⅱ-95-Al_2O_3.This can be explained by energy dissipation at such grain boundaries. Their result-ing high R values coincide with the small degradation of strength in quenching. The highstrength value and low K_(1c) value of type Ⅱ-95-Al_2O_3 samples, which fracture mainlytranscrystallinely, indicate a low value of R and a consequent high strength loss in quench-ing. The relatively high K_(1c) value, together with the high strength value of type P-Al_2O_3samples produce an intermediate R value, corresponding to certain degradation of strengthin quenching. Apparently, for brittle ceramics the value of R could be the criterion for estimation ofthe relative change in strength which is a function of thermal shock.It is recommendedthat the critical stress intensity factor K_(1c), as well as the strength value σ_f, be determinedas a routine laboratory practice in the production and development of n?aterials.

由于脆性本质所决定,大部分陶瓷材料对热应力断裂很敏感。根据断裂力学理论,热应力断裂包括裂纹成核以及裂纹连续扩展过程。而且,裂纹扩展阶段似更危险。指出,断裂面积动态扩张过程的动力与抗热震参数R成反比。R≌(K_(1C)/σ_f)~2,这里K_(1C)是临界应力强度因子,σ_f是抗张强度。 为了探讨上述规律,以显微结构不同的三种Al_2O_3基陶瓷为对象,研究其断裂韧性参数(亦即临界应力强度因子K_(1C)),抗热震参数与很宽淬火温差范围内的热震强度损失率间的关系。结果表明,由于晶界结合力较弱,以沿晶方式断裂的T-Al_2O_3较P-Al_2O_3和Ⅱ-95-Al_2O_3具有低得多的强度。然而,其K_(1C)值略高于Ⅱ-95-Al_2O_3的K_(1C)值。这是由于晶界起了分散能量的作用。结果得到的高R值与其淬火后较小的强度损失率一致。以穿晶断裂方式为主的Ⅱ-95-Al_2O_3强度值最高,K_(1C)值较低,预示了低的R值和必然的高热震强度损失。P-Al_2O_3具有的高强度和较高的K_(1C)值使其拥有中等的抗热震参数值,相应于一定的热震强度损失。 很明显,R值可作为衡量脆性陶瓷强度相对变化的判据,而后者是...

由于脆性本质所决定,大部分陶瓷材料对热应力断裂很敏感。根据断裂力学理论,热应力断裂包括裂纹成核以及裂纹连续扩展过程。而且,裂纹扩展阶段似更危险。指出,断裂面积动态扩张过程的动力与抗热震参数R成反比。R≌(K_(1C)/σ_f)~2,这里K_(1C)是临界应力强度因子,σ_f是抗张强度。 为了探讨上述规律,以显微结构不同的三种Al_2O_3基陶瓷为对象,研究其断裂韧性参数(亦即临界应力强度因子K_(1C)),抗热震参数与很宽淬火温差范围内的热震强度损失率间的关系。结果表明,由于晶界结合力较弱,以沿晶方式断裂的T-Al_2O_3较P-Al_2O_3和Ⅱ-95-Al_2O_3具有低得多的强度。然而,其K_(1C)值略高于Ⅱ-95-Al_2O_3的K_(1C)值。这是由于晶界起了分散能量的作用。结果得到的高R值与其淬火后较小的强度损失率一致。以穿晶断裂方式为主的Ⅱ-95-Al_2O_3强度值最高,K_(1C)值较低,预示了低的R值和必然的高热震强度损失。P-Al_2O_3具有的高强度和较高的K_(1C)值使其拥有中等的抗热震参数值,相应于一定的热震强度损失。 很明显,R值可作为衡量脆性陶瓷强度相对变化的判据,而后者是材料热震严重程度的函数。建议以K_(1C)和抗折强度作为实验室的常规测试,用于陶瓷材料的生产控制和发展。

Applicability of the law of mixtures in dual phase steels and its relation to microstructural features have been investigated. The results indicate under first approximation the strength of dual phase steels is linearly proportional to the percentage of martensite in the structure and is independent of the carbon content of the martensite. It is a comprehensive result of -the increase of martensitic volume fraction and microhardness of the ferrite as well as the decrease of microhardness of martensite. All of...

Applicability of the law of mixtures in dual phase steels and its relation to microstructural features have been investigated. The results indicate under first approximation the strength of dual phase steels is linearly proportional to the percentage of martensite in the structure and is independent of the carbon content of the martensite. It is a comprehensive result of -the increase of martensitic volume fraction and microhardness of the ferrite as well as the decrease of microhardness of martensite. All of these changes are due to increasing the intercritical annealing temperature. The law of mixture in dual phase steel should be modified as follows:Here γ is constant and γ<1.γ is affected by the hardness, early failure of the martensite and hardening of theferrite and so on. So it is easy to explain the deviation between strength value meas-ured by tension test and calculated with the law of mixtures in the dual phasesteels.

本文对双相钢中混合物定律的适用性及其与微观组织特征的关系进行了研究。结果指出,在一级近似下,双相钢的强度是马氏体体积分数的线性函数,而与马氏体中碳含量无关,是随退火温度升高、马氏体的体积分数增加、马氏体的硬度下降、铁素体硬度升高的综合结果。双相钢中的混合物定律为:式中λ是小于1的常数。λ受马氏体的硬度、早期失效、铁素体硬化等因素影响,以此公式容易解释按混合物定律计算的双相钢强度值和实测值之间的偏离。

The article deals with the concept of rock shear strength and its meaning.It estimates,in detail,the determination methods of rock shear strength at home and abroad.According to the experiences from the work of rock shear strength and a great amount of test data,the authors con- sider that the triaxial test is the best to determine rock shear strength, and that the turning method can obtain the strength value which basically corresponds with the value obtained by the triaxial test.Internationally,...

The article deals with the concept of rock shear strength and its meaning.It estimates,in detail,the determination methods of rock shear strength at home and abroad.According to the experiences from the work of rock shear strength and a great amount of test data,the authors con- sider that the triaxial test is the best to determine rock shear strength, and that the turning method can obtain the strength value which basically corresponds with the value obtained by the triaxial test.Internationally, the method is also approved and popularized.Because limited by the equipment and technique,however,the method used frequently in China today is still the simple and double shear tests.The writers think it is better to use the simple shear test when rock shear strength is lower,and use the double one when the strength is higher.Because there is a correspondence between the τ-σ curve drawn by the simple and double shear tests and the Mohr's envelope obtained by the rock triaxial compression test,the rock shear strength obt(?)ined by using a simple or double shear equipment can meet the design demands for general engineening project.

笔者认为三轴试验是测定岩石抗剪强度的最好方法,扭转法可测得与三轴试验较一致的强度值,也是国际上认定和推广的测试方法。但是,由于设备技术条件的限制,目前国内最常用的方法仍然是单面和双面剪切试验,笔者认为岩石抗压强度较低时宜采用单面剪切,而当岩石抗压强度较高时采用双面剪切更好。岩石经单面和双面剪切试验所绘制的τ—σ曲线和岩石三轴压缩试验获得的莫尔强度包络线几乎一致,因此对于一般工程项目利用岩石单面和单面剪力仪,测得的岩石抗剪强度是可以满足工程设计要求的.

 
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