1) rate of frequency change
频率变率
2) change rare of frequency
频率改变率
1.
Then damage extent is identified by neural network technique of change rare of frequency.
针对结构损伤问题,采用损伤定位、定量的分阶段识别方法,即利用柔度曲率改变率指标来确定结构损伤的具体位置,然后以频率改变率为输入参数构建神经网络对损伤部位进行程度识别。
3) change ratio of frequency
频率变化率
1.
The method took the normalized change ratio of frequency and the Frobenius norm of mode shape vector as the input vector of BP neural networks.
将标准化固有频率变化率和质量归一化振型向量变化量的Frobenius范数作为损伤识别神经网络输入参数,以结构中与损伤杆件相关联的节点损伤系数作为神经网络的输出参数,来判定结构损伤位置和损伤程度。
4) frequency conversion
频率变换
1.
The lithium thioindate(LiInS_2) crystal is an attractive material,which can be widely used for nonlinear optical frequency conversion in the infrared region.
LiInS2晶体是一种极具吸引力的晶体,可以应用于红外区域的非线性光学频率变换。
2.
The theoretical calculation of frequency conversion in a new bismuth triborate (BiB3O6) crystal with high nonlinear optical (NLO) coefficient is present.
理论计算了新型高非线性光学系数三硼酸铋晶体(BiB3O6)中的频率变换。
3.
This paper presents a new type of low noise frequency conversion circuit based on the research of phase noise conception, generation as well as relativity measurement method.
本文在对相位噪声的概念、产生及其相关测量方法研究的基础上,设计出一种低噪声频率变换电路。
5) mutant frequency
突变频率
1.
Results The results showed that the TG r mutant frequency in the healthy adults was 0 1628×10 -3 ranged from 0 1300×10 -4 ～0 2903×10 -3 .
方法应用人外周血淋巴细胞抗６－ＴＧ分析技术检测了３０例健康成人和３０例放射工作者体细胞ＨＰＲＴ位点突变频率。
6) Mutation frequency
突变频率
1.
Objective:The major aim of this study was to analyze the point mutation at codon 54 in healthy Chinese Hans, measure the plasma level of MBL, and to analyze the association between gene mutation frequency and plasma MBL concentrations.
结果 :建立了特异敏感的检测MBL基因 5 4位密码子点突变的方法 ,测得健康汉族人基因突变频率为 0 。
2.
The study showed that the mutation frequency of CCR5△32?CCR26-64I ?SDF1-3 A alleles were0.
研究HIV-1相关等位基因CCR5△32、CCR2b-64I、SDF1-3'A在性病艾滋病感染人群中的突变频率和多态性分布的特点,为我国艾滋病的预防和未来的基因治疗提供初步依据。
3.
Objective To observe the effect of epigallocatechin-3-gallate(EGCG) on apoptosis rate,cell cycle,hypoxanthineguanine phosphoribosyl transferase(HPRT) gene mutation frequency induced by long-term UVA and UVB irradiation in human skin fibroblasts.
目的研究紫外线(UV)照射对人皮肤成纤维细胞的细胞凋亡率、细胞周期变化和次黄嘌呤磷酸核糖转移酶(HPRT)基因位点突变频率的影响以及表没食子儿茶素没食子酸酯(EGCG)的干预作用。
补充资料：频率变化率继电器
频率变化率继电器
frequency change rate relay
P Inl口b旧nh口olu]一d一orlql频率变化率继电器(frequeney。hange:aterelay)当所在点交流电压的频率变化率超过预先设定值时动作的继电器。主要用于电力系统的自动低颇减负荷装置中，配合低频继电器的动作，在电力系统发生严重有功功率缺额情况下，加速自动减负荷，以迅速恢复电力系统频率，保证电力系统安全稳定运行。
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