查询词典 impedance

Acoustic impedance changes and hearing threshold shifts after exposure to impulse noise or air-blasts were studied in guinea pigs.

本文利用豚鼠研究了脉冲噪声和空气冲击波暴露后中耳声阻抗的变化和听阈偏移。

The design was based on the Cole-cole three-component model and bioelectrical impedance technology.

根据Cole-cole三元件模型，分析了病变时颅内压与脑阻抗的相应变化情况，开发了基于生物电阻抗法的颅内压无创检测仪。

It is shown that the AC impedance response is different when the potential alkali reactivity exists in the aggregate, and a good parallel correlation exists as compared to the results of accelerated mortar bar test.

结果表明：有潜在碱活性的集料与普通集料有不同的交流阻抗响应，可以根据其特征阻抗谱在复平面中的相对位里以及相角的大小来评定集料的碱活性，所得结果与快速砂浆棒法检测的结果有较好的相关性。

A circuit and method for isolating a subscriber line interface circuit from the ringer generator in a telephone system. Using a gain blocking device to provide a signal gain when the ringer generator is not being utilized and to provide a high impedance when a ringer signal is present.

一种用于隔离电话系统中的用户专用线接口电路和振流发生器的电路和方法，利用一个增益阻塞器件，当振流发生器未被使用时提供信号增益；当振铃信号出现时提供高的阻抗。

Components, impedance, and surface current density is proportional to.

元件的阻抗，与表面电流密度成正比。

It is misunderstood that the backup impedance protection is high-ly sensitive to the inter-phase fault,inter-turn fault and single phase-to-ground fault at star winding of the windings of generator and transformer.

有些人误认为，后备阻抗保护对发电机定子绕组和变压器各侧绕组的相间、匝间短路、YN侧的单相接地短路有很高的灵敏度。

The resulting speed-up comes from the reduction of the input impedance of the picoammeter due to negative feedback.

速度提高的原因是由于负反馈的作用使皮安计的输入阻抗降低。

Two GFRF system model identify algorithms based respectively on Signal Flow Graph/Driving Point Impedance and EDA simulation are proposed. In order to solve the problem of fault diagnosis that the inner structure and parameters of the Object under Test cannot be able to determine, a new fault diagnosis method based on the phase space reconstruction and GFRF general formula is investigated. This method builds up a bridge between the chaos theory and Volterra series analysis, which does not strongly depend on the topological structure and the testing data length, is sensitive to the fault property, traces monotonously the change of system fault, and possesses some significant predominance compared with conventional fault diagnosis methods of analog circuits.

提出了基于信号流图/驱动点阻抗法的GFRF算法和基于EDA仿真和非线性频谱响应特性分析的系统模型辨识算法，为解决工程实践中不能确知被测对象内部结构和参数时的故障诊断问题，研究了基于相空间重构和GFRF简化算法的复杂电子系统故障诊断方法，该方法建立了混沌理论与Volterra级数分析法之间的桥梁，它对被测对象的拓扑结构依赖性不强，对被测系统的故障性质的敏感，可以单调地跟踪系统故障的变化，这种基于混沌特性分析的故障诊断方法与其它的模拟电路的故障诊断方法相比较具有显著的优势。

Compared with known theories, it can be regarded as an important progress, because all the known theories only consider the impedance boundary conditions for single-layered film, and it is very difficult to generalize them to the case of multilayered films.

这是对原有的阻抗边界条件理论的一个值得重视的发展。原有的理论仅仅考虑到单层压电薄膜的阻抗边界条件，而且在三维条件下并不可能直接地推广到多层薄膜的情况。

So the vertical vibration of rigid foundation embedded in a single-layered poroelastic soil based on rigid bedrock is then studied by using the same approximate method.The vertical dynamic impedance and dynamic response factor for different values of soil layer thickness are discussed.

因此文中采用Novak简化计算模型接着研究了下卧基岩单层饱和地基中埋置刚性基础的竖向振动，分析了不同土层厚度下基础的竖向动力刚度、动力放大系数曲线。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。