首先介绍了国内外的几种微波衰减材料,同时分析了我所正在使用和研究的几种衰减瓷;
Several microwave attenuating materials used in MWTs were introduced and their properties were described in detail.
帕金斯不健全的工作衰减材料,例如,复合材料的评价能力,以减少共振的部件,如前端覆盖。
Perkins does work on sound attenuation materials, for example, laminate materials are evaluated for their ability to reduce resonance of components such as front end covers.
然而,专家说,在某些应用条件下,纳米材料反而不利,或是会在几十次充放电后发生衰减。
Still, in some applications, nano-materials gum up the works, or break down after a few dozen charges and discharges, experts say.
然而,高阻材料不允许电荷迅速衰减,就可能产生不稳定的测量结果。
However, high resistance materials don't allow the charge to decay quickly, which may result in unstable measurements.
本文以菠菜叶片作为实验材料,从DF衰减动力学及其总强度的变化研究了DCMU对植物光合作用的影响。
In this paper, with spinach as a testing material, we studied the effects of DCMU on photosynthesis of plant from the characteristics of DF decay kinetic curve and its total intensity.
材料对超声波的衰减是影响超声波探伤仪检测能力的主要因素之一。
Attenuation of ultrasonic wave by material is one of main factors influencing detection capability of ultrasonic wave defectoscope.
试验结果表明:具有不同石墨形态的铸造合金材料对振动衰减的能力差别很大。
The experimental results show that the morphology of graphite has greater effect on the vibration attenuation property of the casting alloy materials than other factors.
针对铁电材料测试系统中不同测试信号电压的差别,设计了电压自动衰减电路。
In view of the different voltage used in system for measuring ferroelectric materials, the automatic voltage-decaying circuit was designed.
分析了动力试桩中,因土阻力和桩身材料阻尼引起的应力波衰减作用对桩身的完整性检测精度的影响。
It also analyses the influence of attenuation of stress wave cased by the soil resistance and the damp of pile shaft material in dynamic pile test on the precision of pile shaft integrity test.
静电衰减时间常数是定量描述材料静电性能的重要物理量。
The constant of electrostatic charge decay time is an important physical quantity that can describe the electrostatics property of materials.
材料的静电电荷衰减速度反映了其静电泄漏性能,所以可以用电荷衰减时间来评价材料的防静电性能。
The electrostatic charge attenuation velocity of material reflects its leaking performance, electrostatic charge attenuation time is used to evaluate anti-electrostatic performance of material.
介绍了利用劈形楔块作波型变换,达到用纵波探头测量材料横波衰减系数的方法。
A method is presented for measuring the shear-wave attenuation of solids by using propagation of ultrasonic wave in a wedge block.
通过研究在不同的循环次数时无定形碳材料的电子自旋共抓信号的强度变化及形态结构的变化,得出了容量衰减的机理。
Through investigation of changes of the intensity of electron spinning signal and morphology of amorphous carbon materials at different cycle numbers, mechanism for capacity fading was obtained.
从理论上建立材料的缺陷模型,并结合声衰减分布图与超声损伤力学原理,就能获得材料的失效模型。
After built the material's defect model in theory, combined the attenuation image and damage mechanics of acoustic, we can get the material's invalidation model.
以X射线衍射(XRD)、透射电子显微镜(TEM)、发射光谱和衰减时间谱等手段表征材料性能。
The morphology, structure, and photoluminescence(PL) of the phosphors were investigated by transmission electron microscope(TEM), X-ray diffraction(XRD), emission spectra, and decay time.
微观上法向键和切向键的密度衰减分别决定着材料不同的宏观全过程破坏特征。
The density evolutions of normal bond and tangent bond in micro scale determined different characters of material failure in macro scale respectively.
摩擦性材料衰减——当刹车片达到高温时有时会“蒸腾”出一些化合物并再次沉积到刹车片的表面。
Friction Material Fade - When pads reach high temperatures they can sometime "outgas" chemicals that redeposit themselves on the surface of the brake pad.
同时分析了材料刚度衰减对疲劳裂纹扩展速率和扩展长度的影响。
The impact of the material constant and the degradation of elastic modulus are analyzed.
利用本文建立的指数衰减模型能够较好地描述材料的非线性塑性应变幅与寿命之间的关系。
A new exponential dissipation model is presented to describe this bilinear material's plastic strain amplitude-fatigue life relation.
实验旨在研究气相爆轰波在阻尼管道(管壁上衬有吸收材料)中传播时的衰减现象。
The present experimental investigation attempts to understand the attenuation of detonation waves propagating through an absorbing material lining section.
通过本文的研究表明,传输线上信号的衰减频率和强度主要依赖于磁性薄膜材料的亚铁磁共振频率和涡流损耗。
According to this paper, the frequency and intensity of the signal attenuation on transmission line are mainly depended on the ferromagnetic resonance frequency and eddy current loss.
利用配有电压自动衰减电路的铁电材料测试系统测量了PZT铁电体材料样品的电滞回线。
The PZT ferroelectric slice sample was measured by the system with the automatic voltage-decaying circuit, and hysteresis loops of the sample was exhibited.
讨论了不同填充比下固有频率对应的衰减系数关系曲线,得出了衰减系数随着大阻尼材料填充比的增大而增大。
It finds that the damping coefficient is directly proportional to not only wave frequency, but the filling fraction of bigger damping material.
而且随着声学吸收材料厚度的增加,气体非稳定爆轰波强度衰减幅度增大。
It was also found that the detonation strengths decrease with increase in the thickness of acoustic absorbing layer.
静电衰减时间常数是定量描述材料静电性能的重要物理量,可以通过测量静电电荷衰减时间达到测量静电的目的。
The constant of electrostatic charge decay time is a important physical quantity that can describe the electrostatics property of materials.
结果表明,可以通过超声衰减的?度直接预测复合材料的力学性能。
Therefore, by determining the intensity of ultrasonic damping, the mechanical properties of composite can be predicted directly.
分析发现基板材料、散热器大小不同,达到平衡状态时的温度不同,对LED灯的光通量衰减影响程度不同。
Analysis showed that under the different condition of substrate materials, sizes of radiator, the flux LED bulbs attenuate different affect extent.
实验测得漂白后交联型材料的二阶倍频信号衰减了28%,而侧链型材料则衰减了75%。
After experimental bleaching a second order frequency-doubling signal of the cross-linked material has bee attenuated for 28%, but the side chain materia attenuated up to 75%.
以剩余强度衰减理论为基础,建立了一种复合材料结构疲劳寿命可靠性定量分析的工程方法。
A analysis method of fatigue life reliability for composite structures is developed based on residual strength degradation theory.
以剩余强度衰减理论为基础,建立了一种复合材料结构疲劳寿命可靠性定量分析的工程方法。
A analysis method of fatigue life reliability for composite structures is developed based on residual strength degradation theory.
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