1) elastic energy attenuation degree
弹性能衰减度
1.
The results show that the maximum value is (1-3~(1/2))Eexp(-33~(1/2)) when strain of loaded coal-rock is 3-3~(1/2)/2ε0, and rock burst happens when elastic energy attenuation degree surpasses the marginal value.
根据煤岩体在变形过程中宏细观能量耗散,得出煤岩体裂纹尖端拉应力过大而失稳扩展是冲击地压发生的根本原因;定义弹性能衰减度和塑性能变化率。
3) performance degradation
性能衰减
1.
The initial experimental results show that the main reason for performance degradation is the decrease of ESA that caused by sintering during high temperature operation.
以PBI/H3PO4体系高温质子交换膜燃料电池为研究对象,进行了500h恒负载条件下的连续寿命实验,运用电化学电位扫描技术和交流阻抗技术测试了电池在连续运行过程中的电化学活性面积(AEC)和电池内阻的变化,实验结果表明在500h的连续寿命实验中,电池性能衰减的主要原因是高温操作条件下由于催化剂的烧结造成的电化学活性面积的损失。
2.
The main reasons of performance degradation of Pt/C catalysts for proton exchange membrane fuel cell(PEMFC)in long term working and the method to improve the stability of Pt catalyst were summarized.
总结了质子交换膜燃料电池(PEMFC)用Pt/C催化剂在长时间运行过程中性能衰减的主要原因及近年来提高Pt催化剂稳定性的方法。
3.
Setting about from the origin of SOFCs resistances, the main factors of influencing the long-term stability of SOFCs, especially the factors of inducing SOFCs performance degradation, are analyzed in detail.
本文从SOFC内阻的主要来源出发,详细分析了影响电池长期稳定性、特别是引起性能衰减的主要因素,并研究其衰减机理。
4) attenuating property
衰减性能
1.
The attenuating property and heat conductivity were researched by network analyzer and laser heat conductivity apparatus.
采用网络分析以及激光热导仪等检测仪器,研究了热压烧结制备的材料的微波衰减性能及导热性能。
5) anelastic attenuation
非弹性衰减
1.
The combined effects of soft rock sites and anelastic attenuation factor have been separated and determined respectively by(using) this method.
采用该方法,分离软基岩场地联合效应和非弹性衰减的影响,并把二者分别确定出来。
6) inelastic attenuation
非弹性衰减
1.
The inelastic attenuation model of media in the Sichuan Basin region has been studied by using the joint conversion of genetic algorithm based on the waveform data recorded by Sichuan Digital Seismic Network.
利用四川数字地震台网记录的地震波形资料,采用遗传算法联合反演方法研究了四川盆地地区的介质非弹性衰减模型。
2.
In this paper, according to the relationship of observation spectrum with source spectrum, travel-path attenuation factor and site effect, we use the digital seismic data of moderate-small earthquakes to invert the soft rock site effect and S wave inelastic attenuation under the constraint of site effect, and determine the parameters of path and site.
采用中小地震的数字观测资料,依据地震观测谱和震源谱、传播路径衰减因子及场地效应的关系式,在对场地效应约束的条件下,反演S波非弹性衰减和软基岩场地效应,确定研究区路径、场地参数。
3.
Using 487 pieces of digital oscillograms of 19 seismic events recorded at 32 seismologic stations located on Ordos massif and its surroundings, we calculate the parameters of three segments attenuation and the relation of inelastic attenuation Q value with frequency in the crust of Ordos Massif, the site responses of 32 stations and the source parameters of 19 events by the genetic algorithm.
采用分布于鄂尔多斯地块及其周缘的32个地震台站记录到的19次地震事件共487条数字化波形记录,利用遗传算法反演得到了整个鄂尔多斯地块地壳内S波的三段几何扩散参数、S波非弹性衰减Q值随频率变化的关系式、32个台站的场地响应以及19次地震的震源参数。
补充资料：弹性
分子式：
CAS号：
性质：除去导致变形的负荷以后，材料迅速回复其原来尺寸和形状的能力。当变形与所加负荷成正比时，该材料被认为是虎克弹性体或理想弹性体。应力和应变不满足线性关系，但仍保持单值关系称非线弹性。加载后经过一定时间后应力和应变才满足线性关系称滞弹性。
CAS号：
性质：除去导致变形的负荷以后，材料迅速回复其原来尺寸和形状的能力。当变形与所加负荷成正比时，该材料被认为是虎克弹性体或理想弹性体。应力和应变不满足线性关系，但仍保持单值关系称非线弹性。加载后经过一定时间后应力和应变才满足线性关系称滞弹性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条