查询词典 high frequency

Presbycusis rate in these groups were: 60~70 41.12%; 71~80 46.25%; above 81 60.34%. The audiometric threshold showed to increase with age, especially in high frequency part.

各年龄组听阈图显示随年龄增长而提高，且高频下降更明显。3。

The discussion covers: 1、By theoretical analysis on the measurement circuit of the piezoelectric accelerometer, a optimization design for charge amplifier is proposed which uses TL081 to replace a largenumber of discrete components. The design not only improve the integration of the circuit, but also have some extra merits, including smaller volume, lower consumption, less autoeciousness and stronger resistance to interruption. 2、Affiliated conditional circuit and filter to the devised charge amplifier, the signal is normalized and the noise ( generally, high frequency signal and DC signal) are restrained.

论文完成的主要工作如下： 1、通过对压电加速度传感器测量电路的理论研究，提出用TL081芯片取代大量的分离元件进行电荷放大器的优化设计方案，从而提高了电路的集成度，使其具有体积小、功耗低、寄生因素少和抗干扰性能强的优点。

Bachel degree above, majing in Electronics, with over 2 years related wk experience; over 1 year wk experience in EMC design of board /card products; familiar with EMC testing stards the technical requirements of EMC EMS testing items; familiar with theetical knowledge in analog circuit, digital circuit, high-frequency electronic circuit, signal system electromagnetic field.

电子类专业本科以上学历，2年以上相关工作经验，有1年以上板卡类产品EMC设计工作经验，了解EMC测试标准，熟悉EMC，EMS的各项测试项目的技术要求，熟悉模拟电路，数字电路，高频电子线路，信号与系统，电磁场的理论知识。

The liquid density sensors presented in this project are dependent on the Surface Acoustic Wave technics in the fabrication process. Considering the maturity of SAW technics and the easiness of high frequency BAW generation with the IDTs, it is convenient for sensors miniaturization.

本项研究工作提出的微量液体密度传感器在制作上仅需采用成熟的声表面波工艺即可，实现起来比较容易，叉指换能器容易激发较高频率的体声波，便于传感器小型化。

Study shows that the error is biggish in high frequency range.

针对声场大多呈非线性的特点，提出了应用几何平均计算声压的方法。

Tables 4 and 5 show the bivariate and multivariate models forprediction of high-frequency hearing loss.

表4和5显示二元和多维分布的模型为高频率听力丧失的预言。

The adaptor is a must for numerous computer peripherals. As an important computer exporter worldwide, the dc power supply industry is bloomy in Taiwan. In today's dc power supply market, the switch power supply has replaced the linear adaptor as main stream in the industry globally for its compact size. However, SPS has a serious problem of high frequency electromagnetic interference and causes harmonic feedback for the AC power source compared with linear adaptor. The energy consumption is also worse for SPS than linear adaptor.

摘要整流器是许多电脑周边设备不可或缺的电能，而台湾又是电脑及周边产品出口大宗国，因此电源供应器产业澎勃发展是必然的，其中轻薄短小及输出稳定之交换式电源供应器(Switch Power Supply：SPS)，已取代传统线性整流器的地位，成为外销主力并取得世界龙头地位，然SPS有严重的高频电磁干扰问题(150KHz~300MHz)，在交流电源侧产生的谐波含量，也较线性整流器来得严重，为一耗能产品。

The physical model and simulation mathematical model for high-frequency floating new structure caseless and common structure auto-rifle are established separately in this dissertation when they are in conditions with or without restrain, the simulation model sets are constructed and some simulation models are tested by the comparison with theoretical value to test value.

本文分别建立了无约束和有约束条件下高频浮动新结构无壳弹枪和常规结构自动步枪的物理模型和仿真数学模型，它们构成了&仿真模型集&，通过理论值和实验值的比较，对部分仿真模型进行了验证。

High frequency stimulation , as a dynamic factor, had been used in cauda equina compression model to study electrophysiological changes after it.

前列腺素＊具有很强的周围血管扩张活性及抗血小板凝聚作用。在治疗动脉阻塞性疾病及其他缺血性疾病中，它的作用已被证实。

Using the intracellular recording technique for monitoring the excitatory postsynaptic potentials of CA1 pyramidal neuron and delivering an activator of protein kinase C and/or inhibitors of PKC and 〓/calmodulin-dependent protein kinase Ⅱ into postsynaptic cell in hippocampal slices, we studied the role of postsynaptic PKC and CaMKⅡ in long-term potentiation induced by high frequency stimulation at the CA1 synapses made by Schaffer collateral/commissural and perforant pathway afferents.

用电生理学方法在大鼠海马脑片CA1区锥体细胞记录Schaffer侧枝和穿通通路到CA1神经元突触的兴奋性突触后电位，通过送蛋白激酶抑制剂和激活剂进入突触后细胞，我们研究了突触后蛋白激酶C和依赖钙/钙调蛋白的Ⅱ型蛋白激酶在高频刺激诱导的长时程增强产生和维持中的作用。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！