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notch depth     
相关语句
  陷波深度
     Experimental results show that the frequency tracking error is less 晅han 0.5Hz in the range from 45Hz to 55Hz, and the notch depth of the filter, i.e. series mode rejection ratio, is 30-40 dB.
     实验结果表明在频率从45—55Hz,其陷波频率跟踪精度优于0.5Hz,而陷波深度(串模抑制比)为30—40dB.
短句来源
     In the experement the PIIN was reduced to -50 dB/MHz, and the notch depth reached the level of 65 dB.
     实验中采用这些方法将PIN降至-50dB/MHz。 通过微调环路损耗以满足最佳陷波条件使FORDL的陷波深度达到了65dB。
短句来源
     The filter utilizes T-type notch filter equivalent circuit consisting of two SAW one-pole resonators plus simple tuning component. The device has a notch depth of 15 dB; -3 dB notch width of 600 kHz with the pass band loss and ripple of (-0.735) dB and 0.5dB respectively.
     该陷波器采用T型带陷滤波器等效电路结构,用两个SAW单端对谐振器加简单调谐元件构成,器件尺寸为3.8mm×3.8mm,陷波深度为15dB,-3dB陷波宽度为600kHz,通带宽度大于700MHz,通带损耗为-0.735dB,通带波纹0.5dB。
短句来源
  缺口深度
     The influence of notch depth on notched tensile strengthof steel 15MnVN in the normalized,thermal simulated and welded state was investi-gated. The authors present in this paper an expression D for the susceptibility of steelto hydrogen induced cracking,as indicated by the difference in reduction of notchedtensile strength caused by hydrogen i.e.,D=(σ_(NT)-σ_(Impc))/(σ_(NT))100%.
     并对正火、热模拟和焊后状态的15MnVN 钢进行了不同缺口深度对钢材缺口拉伸强度影响的试验,提出用由氢引起的缺口强度降低的程度,来表示钢材对氢致裂纹的敏感性,并以D 值表示:D=(((?) _(NT)-(?)
短句来源
     AN INQUIRY OF THE RATIONAL NOTCH DEPTH OF THE IMPLANT TEST SPECIMEN
     插销试件合理缺口深度的探讨
短句来源
     Afterwards, the notch depth increases gradually, and the cutter blade enters a long and slow period of blunting.
     之后,缺口深度变化不大,切断刀进入一个较长时期的缓慢钝化阶段。
短句来源
  梳状深度
     And a-41 dB notch depth is achieved. Transverse feedback system with this notch filter succeeds in curing the instability of the beam. It is proved that the filter can satisfy the requirement of the BEPCII transverse feedback system.
     梳状滤波器是信号处理电子学的重要部件,利用两根长短不同的电缆以及一个功分器和合成器构成了一种简单有效的梳状滤波器,其梳状深度达到-41dB,使用这种梳状滤波器的横向反馈系统成功地抑制了束流中出现的不稳定性。
短句来源
  切口深度
     B.for determining K_(ic)of ceramic materials was studied. The results showed that neither the loading velocity nor the notch depth had obvious effecty on K_(ic(?) )and that the notch width had great effect on K_(ic)of ceramic materials.
     B.法测量陶瓷材料的 K_(ic),结果表明,加载速度、切口深度对 K_(ic)值无明显影响,切口宽度对 K_(ic)值影响极大.
短句来源
     Then the calculation formula, reflecting the relationship between the fracture toughness K_(IC) (ceramsite reinforced concrete and ordinary concrete) and tensile strength, notch depth, is presented.
     提出了断裂韧度K_(IC)与混凝土抗拉强度、切口深度的计算公式。 试验和分析证实。
短句来源
     and the notch depth and the radius of the bottom arc of the notches have no notable effect on the tensile strength and yield stress of the notch test samples.
     其切口试件的切口深度和切口底部圆弧半径对材料的拉伸强度和屈服应力没有显著影响。
短句来源
     The J integral value obtained by the simple estimation method agrees well with that determined by the energy method using multiple medium carbon steel specimens with a circumferential notch, as far as the notch depth is deep or as far as the twist angle is small.
     首先得到了一系列带有不同深度环状切口的中碳钢圆棒试样的扭矩-扭转角关系,然后分别利用单试样的简单评价法和多试样的能量法计算J积分值。 结果发现,当圆棒试样的切口深度足够深(即裂纹长度足够长)或扭转角足够小时,两种方法计算的J积分值相当一致。
短句来源
     Based on the experiment and finite element analysis of reinforced and plain concrete three-point bending beams with various notch depths, the investigation on fracture behavior is conducted. The effect of steel ratio, kinds of concrete, and notch depth on concrete toughnees K_(IC) as well as on crack tip opening displacement is analyzed.
     通过对加筋及无筋陶粒混凝土和普通混凝土带大、小缺口的三点弯曲梁进行试验和有限元分析,对其断裂性能进行研究,分析得到配筋大小、混凝土品种和强度、切口深度对混凝土断裂韧度K_(IC)及临界裂缝尖端张开位移CTOD_(IC)的影响。
短句来源
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      notch depth
    For circumferentially-notched round specimens, constrained general yielding occurs beyond a critical notch depth.
          
    The corrosion fatigue crack initiation in this case is controlled by the repassivation kinetics of the material and also by a critical notch depth, depending on the applied stress range.
          
    These same analytical tools were also used to predict the influence of specimen notch depth, notch angle, and notch-root radius.
          
    The effects of notch depth and residual stress on fatigue life are determined from the simulation tests.
          
    Minimum stress-concentration factors, produced by multiple elliptical notching of beams, are obtained for wide ranges of notch width, semiminor elliptical axis, notch depth, notch pitch and depth of beam.
          
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    J-integral of sheet notched specimen has the simplest form when the notched surface has been taken as the integral contour, i. e.it can be still simplifiedwhereandit can be seen that the ratio of J-integral to radius of curvature P is proportional to the maximum deformation work density W0 at notch root.The specimens were cut from hot rolled sheet of aluminium alloy LY12 with yield strength σ0.2=11.2 kgf/mm2. The specimen sizes are: thickness B = 30mm, width W= 150mm, notch depth a=40mm, and the radiuses...

    J-integral of sheet notched specimen has the simplest form when the notched surface has been taken as the integral contour, i. e.it can be still simplifiedwhereandit can be seen that the ratio of J-integral to radius of curvature P is proportional to the maximum deformation work density W0 at notch root.The specimens were cut from hot rolled sheet of aluminium alloy LY12 with yield strength σ0.2=11.2 kgf/mm2. The specimen sizes are: thickness B = 30mm, width W= 150mm, notch depth a=40mm, and the radiuses of notch curvature ρ=20mm and 9mm, respectively. The resistance strain gauges of 1 by 1mm were adhibited on the inner surface of notch at angles θ being 0°, 10°, 20°, 30°, 45°, 60°, 75° and 90°, respectively. And then, the measurement of strain distribution ε(θ) at various load levels was made and deformation work density distribution W(θ) was derived from stress-strain curve. The value A, at last, has been determined by means of numerical integration and the approximation function, and varied in a range of 0.9 to 1.2.Owing to the limitation of the experimental accuracy and the difficulty in determining exact degree of plane strain, the agreement of experimental calibration of J-integral in the present work with J converted from equivalent stress intensity factor Keff considering Weiss's correction of plastic zone can be considered as an approximation for engineering.

    单边缺口试样的J积分,当取其缺口内表面为积分回路时,有特别简单的形式,即,并可进一步简化为,其中。 本文对两种单边缺口试样(缺口根部曲率半径ρ分别为20毫米和9毫米),测定了缺口内表面的应变分布ε(θ),再经应力-应变曲线转换成形变功密度分布W(θ),最后通过数值积分求出系数A。试验结果与考虑了Weiss塑性区修正的线弹性断裂力学方法做了比较。

    The present report summarized the work on the susceptibility to hydrogen embri-ttlement of steel by C.L.M.Cottrol,F.Watkinson and et cetera,utilizing roundnotched tensile test specimens in a chamber filled with high pressure hydrogen.Thespecific type of Implant test specimen as recommended by ⅢW(round specimen,8mmdiam.,40°deg.notch,<0.1mm root radius,0.5mm notch depth)was analyzedand its shortcomings cited.The influence of notch depth on notched tensile strengthof steel 15MnVN in the normalized,thermal...

    The present report summarized the work on the susceptibility to hydrogen embri-ttlement of steel by C.L.M.Cottrol,F.Watkinson and et cetera,utilizing roundnotched tensile test specimens in a chamber filled with high pressure hydrogen.Thespecific type of Implant test specimen as recommended by ⅢW(round specimen,8mmdiam.,40°deg.notch,<0.1mm root radius,0.5mm notch depth)was analyzedand its shortcomings cited.The influence of notch depth on notched tensile strengthof steel 15MnVN in the normalized,thermal simulated and welded state was investi-gated.The authors present in this paper an expression D for the susceptibility of steelto hydrogen induced cracking,as indicated by the difference in reduction of notchedtensile strength caused by hydrogen i.e.,D=(σ_(NT)-σ_(Impc))/(σ_(NT))100%.The authorsgive also an example of taking the D value as criterion to compare two differentpostheat procedures and choose the one suitable for making certain welded pressurevessels free from hydrogen induced cracking.

    本文对C.L.M.Cottrell,F.Watkinson等采用带环形缺口试件.在充氢高压釜中做拉伸试验,用以确定钢材氢脆敏感性的研究结果进行了分析,指出了IIW 推荐的插销试件缺口型式的不足之处.并对正火、热模拟和焊后状态的15MnVN 钢进行了不同缺口深度对钢材缺口拉伸强度影响的试验,提出用由氢引起的缺口强度降低的程度,来表示钢材对氢致裂纹的敏感性,并以D 值表示:D=(((?)_(NT)-(?)_(Impcr))/(?)_(NT))×100%最后叙述了D 值的应用实例,用D 值比较了两种后热工艺,为某压力容器的焊接,选择了防止氢致裂纹的后热工艺.

    The stationary domain in a planar Gunn device with expanded cross-section ncaranode has been investigated.As the bias voltage increases,the transformation from sta-tionary domain mode to transit domain mode was observed experimentally,and furtherverified by computer simulation.The effects of cross-sectional gradient,doping concen-tration,notch depth,bias voltage and D-E relationship on the formation of stationarydomain arc discussed.It is noticed that the electric field outside the domain reaches itsmaximum...

    The stationary domain in a planar Gunn device with expanded cross-section ncaranode has been investigated.As the bias voltage increases,the transformation from sta-tionary domain mode to transit domain mode was observed experimentally,and furtherverified by computer simulation.The effects of cross-sectional gradient,doping concen-tration,notch depth,bias voltage and D-E relationship on the formation of stationarydomain arc discussed.It is noticed that the electric field outside the domain reaches itsmaximum value while the domain is in a quasi-stationary but not real stationary state,and this maximum value plays an important role in determining whether the domain willfinally become stationary or will transform into transit mode.The significance of diffu-sion of electrons to formation of a stationary domain is also discussed.

    本文研究具有几何扩展结构的平面Gunn器件.实验上观察到静止畴的形成以及当外加电压升高时转变为渡越畴的现象,用计算机模拟研究也得到了上述过程.根据计算结果,讨论了影响静止畴的有关因素.本文指出,准静态时畴外电场的大小对静止畴的形成和转变具有关键的作用.还讨论了扩散作用对静止畸形成的影响.

     
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