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1)  attenuation energy
衰减能
2)  energy attenuation
能量衰减
1.
Analysis of laser altimeter echo energy attenuation in atmosphere transfer medium;
大气传输介质引起的激光测高仪回波能量衰减分析
2.
In this paper the characteristics of pulse voltage waveform distortion,and pulse energy attenuation along the discharge wire in a wire-plate pulsed corona discharge reactor have been investigated for decreasing the energy cost and improving the removal efficiency of SO2 and NOx from flue gas.
实验结果表明脉冲电压沿放电线传输时,电压波形发生衰减,随着传输距离的增大,电压波形变形严重;电压、Cp、d和l对能量衰减有一定的影响,增大电压、Cp和d,沿线脉冲能量的衰减速度增大;l越短,能量衰减越快。
3.
The method is based on the difference of ray energy attenuation between the examined object and its internal lacuna which will cause difference of ray intensity.
介绍了一种应用X射线确定焊缝缺陷的方法 ,这种方法的实质是根据被检工件与其内部缺陷介质对射线能量衰减程度不同 ,而引起射线透过工件后的强度差异。
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)  efficiency attenuation
效能衰减
1.
The quantitative relation between target physical damage and efficiency attenuation is settled by the exponent method.
采用损伤树技术分析目标功能结构,并确定关键子目标;将目标系统分解成一系列典型目标,并按典型目标方法选取毁伤效果指标;用指数法解决子目标物理毁伤程度与效能衰减程度间的量化关系;最后,根据系统目标功能结构特点,求取目标系统的整体效能。
5)  sound energy decay
声能衰减
1.
In the measurement of random-incidence scattering coefficient by synchronized averaging of the impluse responses,the sound energy decay curve obtained by the backward integration of the squared averaged impulse will be influenced by the correlated components among these responses.
用脉冲响应同步平均法测量无规入射散射系数时 ,叠加后再经反向能量积分得到的声能衰减曲线 ,会受到不同脉冲响应中散射成分相关的影响 。
6)  optical energy attenuation
光能衰减
补充资料:抗肾上腺素能神经药、去甲肾上腺素能神经阻滞药
分子式:
CAS号:

性质:又称抗肾上腺素能神经药、去甲肾上腺素能神经阻滞药。指一类通过影响递质去甲肾上腺素在去甲肾上腺素能神经末梢的贮存,产生拮抗去甲肾上腺素能神经作用的药物。与抗肾上腺素药比较,二者作用相似但作用部位不同,抗肾上腺素药作用于效应器细胞的受体,而肾上腺素神经阻滞药作用于去甲肾上腺素能神经末梢。代表药为利血平,主要用于高血压病、因长期用药物偶致抑郁症,目前已很少用。

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