查询词典 difference frequency

This paper analyses the operation characteristic of portal jib crane,and discuss selecting principle and calculation formulas of motor and capacity which frequency inverter and it's brake type and accessory of the AC variable frequency and speed regulation applied to portal jib crane , finally introduce case which CHV190 inverter applied in portal jib crane .

本文分析了门座式起重机的运行特点，详细阐述了英威腾 CHV190起重机专用变频器用于门座式起重机调速时的电动机、变频器及其制动方式的选型原则和变频器周边设备的容量计算方法，最后介绍了 CHV190变频器在门座式起重机中的应用案例。

Melting adopted from German Junker 5-ton double furnace double electric supply medium frequency induction furnace, 15-ton double furnace double electric supply medium frequency induction holding furnace, 2sets of 8-ton per hour water cold continuously melting cupola .

熔化采用德国容克公司5吨双炉体双供电中频感应熔炼炉，15吨双炉体双供电中频感应保温炉，两台8吨/小时水冷连续熔化冲天炉；混砂采用德国爱立许砂处理系统，处理能力每小时可达160吨；制芯采用德国兰佩F40数控热芯盒射芯机、F40数控冷芯盒射芯机，适应各种缸盖、缸体、飞轮、排气歧管等制芯。

The results showed that the kerf width increases with the increase of the power density, pulse frequency and pulse width; the cutting speed is increased and the cutting quality is improved with increasing the pulse frequency.

结果表明，缝宽随激光功率密度、频率以及脉宽的增加而加大；提高激光输出重复频率，不仅有利于提高加工质量，而且可以增大切割速度，提高加工效率。

6800G Blu-ray version of the wireless kit is a colorful Technology recently recommended a new suite of wireless power, using zero-latency 2.4GHZ radio frequency technology, can receive information from up to 10 meters; 16 radio channels, can be automatically frequency-hopping; keyboard with full - The new ultra-thin keycap, laser character, mute better effect, and the permanent lossless.

多彩科技是国内著名的外设厂商，商品性价比非常高。6800G蓝光版无线套件是多彩科技近期全新推荐的一款无线省电套件，采用零延迟2.4GHZ无线射频科技，接收距离可达10米；16个无线频道，可自动跳频；键盘采用全新超薄键帽，镭射字符，静音效果更佳，且永久不掉字。

By using low-frequency dynamic frequency density wave, the OA kneepad could regulate many aspects of pathological process of knee OA including: inhibition of biological effects of cytokine, MMP-3, HA, oxygen free radicals and NO; enhancing the biological activity of SOD; up-regulating the mRNA expression of Bcl-2 as well as down-regulating the mRNA expression of P53, thereby to inhibit the apoptosis of cartilage cells and delay the cartilage degeneration of the macro-morphology, cartilage cells and cartilage matrix.

OA护膝采用低频温热动态变频疏密波，针对膝OA病理过程中的多个环节进行调节，能有效抑制细胞因子、MMP－3、HA、氧自由基、NO的生物学效应，增强SOD的生物学活性，提高关节软骨细胞Bcl-2mRNA表达，减弱软骨细胞P53mRNA表达，从而抑制软骨细胞凋亡，延缓膝关节软骨宏观形态、软骨细胞及软骨基质的退变。

The Company mainly operates and acts as the agent for the following products including:frequency conversion cabinet,frequency converter,soft starter,automated control system,series of low-voltage circuit breaker,contactor,control relay,protective relay,knife switch,isolating switch,capacitor,dual power switching unit,low-voltage mutual inductor,low-voltage fuse,high-voltage vacuum circuit breaker,high-voltage mutual inductor,high-voltage load switch,high-voltage fuse,microcomputer integrated protection device and components and parts including automatic control products, Lights,button,terminal,electric meters and electromechanical products including pump,valve fan,motor,voltage transformer,wires and cables.

公司主要经营及代理的产品有：变频柜、变频器、软启动器、自动化控制系列及系列低压断路器、接器、控制继电器、保护继电器、刀开关、隔离开关、电容器、双电源切换装置、高压真空断路器、高低压互感器、高压负荷开关、高低压熔断器、微机综合保护装置及自动化控制产品、信号灯、按钮、端子、电度表等元器件及水泵、阀门、风机、电机、变压器、电线电缆等机电产品约1000多个品种、20000余种常用规格。

The Company mainly operates and acts asthe agent for the following products including:frequency conversioncabinet,frequency converter,soft starter,automated controlsystem,series of low-voltage circuit breaker,contactor,controlrelay,protective relay,knife switch,isolating switch,capacitor,dualpower switching unit,low-voltage mutual inductor,low-voltagefuse,high-voltage vacuum circuit breaker,high-voltage mutualinductor,high-voltage load switch,high-voltage fuse,microcomputerintegrated protection device and components and parts includingautomatic control products, Lights,button,terminal,electric metersand electromechanical products including pump,valvefan,motor,voltage transformer,wires and cables.

公司主要经营及代理的产品有：变频柜、变频器、软启动器、自动化控制系列及系列低压断路器、接器、控制继电器、保护继电器、刀开关、隔离开关、电容器、双电源切换装置、高压真空断路器、高低压互感器、高压负荷开关、高低压熔断器、微机综合保护装置及自动化控制产品、信号灯、按钮、端子、电度表等元器件及水泵、阀门、风机、电机、变压器、电线电缆等机电产品约1000多个品种、20000余种常用规格。

Occurrence of the triangular shape decreased with the age. The frequency of irregular labrum and absence labrum increased with the age. The frequency of labrum high signal intensity increased with the age.

随年龄的增长，三角形髋臼唇出现频率逐渐降低，不规则形及缺如型髋臼唇出现频率逐渐增高，髋臼唇出现异常信号的频率逐渐增高。

In order to get the more accurate data of atmospheric capacity about this type of area, such as Yueyang, this paper analyzed the characteristics of Yueyang meteorology, gathered the features of atmospheric pollution sources, worked out the main problems in environmental protection. In addition, we analyzed the rule of atmospheric transport and diffusion, and took the Frequency of lake and breeze to modify the data of atmospheric capacity of Yueyang, which was achieved by A-P index, and compares the modified data of atmospheric capacity with the data of atmospheric capacity achieved by multi-source. The results indicated that according to the fact of lake and breeze, taking the frequency of lake and breeze to modify the data of atmospheric capacity of the field with stable lake and breeze, which is achieved by A-P index, made the atmospheric capacity more accurate. Accordingly, the result could be more reliable if the modified data is taken to calculate the atmospheric capacity when we assess the impact on the environment of the field with stable lake and land breeze.

为准确地求得这一类型地区的大气环境容量，本文研究了岳阳市城区大气环境的主要特点，收集大气污染源数据并进行分析，查明岳阳市城区主要环境问题，分析岳阳市城区主要大气污染物的迁移转化规律，对A-P指数法求得的岳阳市大气环境容量值用湖陆风频率进行修正，并将修正后的大气环境容量与多源模型(区域大气环境容量计算模型)求得的大气环境容量进行对比，得出结论：根据湖陆风环流情况下的大气扩散方式，对有稳定的湖陆风环流的地区，采用湖陆风频率修正A-P指数法求大气环境容量，进一步提高了计算的准确性。

This makes it possible to reduce vibration and noise on a certain frequency in application. By finite element method, frequency response and radiating noise of block's lateral surface under the impact are analyzed.

根据不同频率灵敏度最大值所对应的位置不同这一特点，可进行局部参数修改，而对其它频率响应的影响很小，使得实际中针对某一频率的减振降噪成为可能。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。