查询词典 medium frequency

The leading products of the company is PDM1、3KW full solid state broadcasting transmitters, DAM10、25、50、100KW digital circulate modulate medium wave broadcasting transmitters, M2W10、50、100KW digital circulate medium wave broadcasting transmitters, 100W、300W、1、3、5KW full solid state frequency modulation dimensional sound broadcasting transmitters.

公司的主导产品为PDM1KW、3KW全固态广播发射机，DAM10、25、50、100KW数字循环调制中波广播发射机，M2W10、50、100KW数字幅相调制中波广播发射机，100W、300W、1、3、5KW全固态调频立体声广播发射机、远程监控系统以及发射机辅助产品等。

The viscosity of the medium will cause dissipation of seismic energy, thus decreasing the amplitude and modifying the frequency content of the propagating wavelet. In order to obtain accurate information and imaging with high distinguishability from seismic data, the propagating rule of wave in viscoelastic medium should be studied.

地震波在大地介质的传播过程中，不仅波的振幅会衰减，而且有频散现象，因此要从地震数据中得到复杂构造的准确信息和高分辨率的图像，就必须研究粘弹性介质中波的传播规律。

Furthermore, supplements of callus induction medium under N6 basic medium,such as concentration of 2,4-D, proline and casein hydrolysate were used to study their effects on the induction frequency,embryogeny and quality of callus,the inhibition of embryo spontaneous shooting.

幼胚在附加4 mg/L 2，4-D且去掉水解酪蛋白和L-脯氨酸的N6改良培养基上，幼芽及根的数量少、出愈率高、愈伤组织质地好，并明显减少了幼胚自发性芽分化的趋势，有利于保持愈伤组织胚性、提高再生植株频率，为玉米自交系幼胚诱导的适宜培养基。

The paper presents an account of selection of frequency changer used for feeding pump of dense medium cyclone , effect of function of the frequency changer and the problems identified in its application.

介绍了重介质旋流器给料泵变频器的选择、控制功能的实现以及应用中的几个问题，说明了变频调速技术的优势和应用潜

Handed in in Tokyo card in April 2007 when what hanging out his shingle, limited company of Asian interactive medium (Tokyo bourse code: 2149, say below " Asian interactive medium ") the focus that ever was each angle, at present lets it more " have one's moment ", be frequency hair however inside accuse scandal and the crisis that retreat city.

2007年4月在东京证交所挂牌时，亚洲互动传媒有限公司(东京交易所代码：2149，下称"亚洲互动传媒")曾是各方追逐的焦点，眼下让它更加"走红"的，却是频发的内控丑闻和退市危机。

When the nonlinear layer which has weak nonlinearity is thin and far away from the seismic source which be low energy, compared with the corresponding results in linear antis, the medium nonlinearity produces abort 1/10~1/4 and 1/10~1/3 differences of instantaneous dominant frequency aid bandwidth. These instantaneous feature differences of seismic waves induced by the nonlinearity of media become weaker and weaker with the decrease of source energy. However, with the increase of the wave travel path within the mummer layer, the nonlinear accumulation effect could still keep such phenomena as the waveform distortion and instantaneous dominant frequency and bandwidth variations in records.

在本文给定的弱非线性介质中（非线性炽较薄且远离震源），在震源能量较低的情况下，介质的非线性效应会造成地震波瞬时主频和频宽相对于线性介质情况分别为1/10~1/14和1/10~1/3左右的变化量此外，随着入射波能量的下降，介质非线性所造成的地震波瞬时特征的变化量减小，但随着地震波在穿越非线性介质时路径的加长，非线性作用的累积效应使得波形畸变和频率分布特征的变化等现象得以维持。

In the work, employing a function with four undetermined parameters to model the source wavelet, an analytical relation between Q-factor and envelope peak instantaneous frequency is derived from the theory of one-way waves propagating in an anelastic medium; at the same time, a method for extracting instantaneous frequency in wavelet domain is developed for improving the precision and anti-noise performance of IF estimation, and based on these, a method called EPIF in wavelet domain is proposed for estimating Q-factor of VSP data.

本文采用一个具有4个待定参数的函数去逼近震源子波，利用黏弹介质中单程波传播理论推导出了地震子波包络峰值处瞬时频率和品质因子之间的解析关系；同时，为提高瞬时频率的估计精度和抗噪性能，在小波域中发展了一种计算瞬时频率的方法，并在此基础上提出了估算VSP资料Q值的方法，简称小波域包络峰值处瞬时频率法。

A parametric study is made based on the solutions to illustrate the influence of the minimum quality factor concerning the creep and relaxation behavior of porous medium, the permeability parameter concerning the partial permeable behavior of boundary, and relative rigidity of liner and medium on the frequency response of the cavity.

并进行了算例分析，讨论了反映介质黏弹性性质的最小质量因子，反映孔洞边界半透水性质的渗透性参数及衬砌和介质的相对刚度对问题的影响。分析结果表明：以上参数对圆柱孔洞的频域响应有很大影响。

Measure character: Frequency limits: CH1:dResolution of C ～ 225MHz frequency: 10 / second time-interval resolution : N/A measures speed: Can amount to 200 times measure / the second mixes in limits of the voltage on GPIB sensitivity : DC ～ 100MHz: 200MHz of ～ of 5Vac+dc 100MHz of 20mVrms ～±: 225MHz of ～ of 5Vac+dc 200MHz of 30mVrms ～±: Input of 5Vac+dc of 40mVrms ～± adjusts:(CH1 chooses) impedance, coupling: 1M Ω or 50 Ω, ac or Dc are low connect filter: 100kHz, but switch attenuation:× 1 or reference of × 10 exterior time base inputs: 1, 5, 10MHz sparks: CH1, to rising / drop the edge sparks, the percentage that uses signal n or absolutely voltage install n, setting sensitivity mixes to low, medium or tall gate start: Automatic, the hand is moved (setting gate time or resolution digit); Exterior, defer interface: Standard GP-IB(IEEE 488.1 and 488.2), take; of SCPI compatible language to say RS-232 power source only: 10 ％ of 100-120VAC ±, 50, 60 or 10 ％ of 400Hz ± 10 ％ of 220-240VAC ±, 50 or 10 ％ of 60Hz ± are suttle: 3kg dimension: 348.3mm of × of 212.6 × 88.5H

测量特征：频率规模：CH1：dc～225MHz 频率分辨率：10位/秒时候距离分辨率：N/A 测量速度：可达200次测量/秒在GPIB上电压规模和灵敏度： DC～100MHz： 20mVrms～±5Vac+dc 100MHz～200MHz：30mVrms～±5Vac+dc 200MHz～225MHz：40mVrms～±5Vac+dc 输入调节：(CH1选择)阻抗，耦合： 1MΩ或50Ω，ac或dc 低通滤波器： 100kHz，可切换衰减：×1或×10 外部时基参考输入： 1，5，10MHz 触发： CH1，对回升/回升沿触发，用信号电平的百分数或相对电压设置电平，设置灵敏度至低、中或高闸门和启动：主动，手动(设置闸门时候或分辨率位数)；外部，延迟接口：尺度GP-IB(IEEE 488.1和488.2)，带SCPI兼容说话；只讲RS-232 电源：100-120VAC±10％，50，60或400Hz±10％ 220-240VAC±10％，50或60Hz±10％净重：3kg 尺寸：212.6×88.5×348.3mm

This paper analyzes that the biggest bottleneck of RFID is business model, and points out that the application of medium-and-low frequency mode has been mature, but the application of ultra-high frequency mode still needs innovation.

本文首先分析了RFID行业的发展瓶颈之首是商业模式，明确指出我国中低频段的应用模式已经较为成熟，但是超高频的应用模式需要创新。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。