高频

Based on the measurement of noise of an idling lathe C630,the effects of gear tooth friction on change gear noise ,and the relation between friction excitation frequency and gearing frequency were analyzed.

结果证明：齿面摩擦对齿轮振动的激励频率是啮合频率的2倍，可以利用适当的润滑有效地抑制齿轮噪声的高频成分。

This has all of the standard Sea Ray options:Air/heat, aft cabin, sette w/table and leather u-shape couch, centered V-berth, Corion counters,full size frig, microwave, stove top, hot water, Vac-u-Flush head, and VHF.

这所有的标准海光选择：空气/热量，船尾舱，泽塞特瓦特/表和皮革U型沙发上，中心V型泊位，科里翁柜台，全尺寸冰箱，微波炉，灶具前，热水，吸尘器， U型冲洗头，高频和甚高频。

This product according to the human body physiology principle, through a great deal of fulfillment, adoption reasonable, the structure of the tightly packed, produce the high vibration of 频, carry out the beautification skin in order to, fructify the skin organization, the blood vessel extend, the instauration extends the dint and flexibilities muscle, and remove tired etc.

本产品是根据人体生理学原理，经过大量的实践，采用合理、紧凑的结构，产生高频振动，用以实现美化皮肤，结实皮下组织，血管扩张，恢复肌肉的扩张力与弹性，并消除疲劳等作用。

objective to study the curative effect of fulguration combining mycobacterium injection in treat ment of condyloma acuminatum.methods the patients with ca were treated by fulguration in large range and local mycobacterium injection under fulguration wound.results the recurrence rates were 20.59% and 58.82% respectively in the observation group and in the control group.

目的 探讨电灼联合局部注射草分枝杆菌治疗尖锐湿疣的效果。方法治疗组应用电灼大范围炭化疣体，并在创面即疣体的基底部注射草分枝杆菌。对照组单纯采用高频电灼治疗。结果两组愈后复发率分别为20.59%、58.82%，前者明显较后者低，两组比较差异有非常显著性（ p ＜0.01）。

In the high-frequency full-power, long tube output should pay special attention to the cooling system is normal, because the full power output of the tube heating than half-power when the high heat four times, when the cooling system abnormalities and easily damaged when the tube

在高频全功率、长时间输出时应特别注意电子管的冷却系统是否正常，因为在全功率输出时的电子管发热量比半功率时的发热量高四倍，当冷却系统异常时及易损坏电子管

The article makes a comparison among different types of bus, bus transmission signal and several familiar topologies of front-end converters and load-end converters. Finally, the half bridge converter with full-wave rectifier based on the high-frequency parallel-type AC bus bar is chosen as circuit structure and optimized. The working mode under different condition of the circuit is analyzed and a mathematical model is set up under continuous current mode. Simulation result is used as comparison.

通过对比不同类型的母线、母线传输信号以及各种常见的前端变换器拓扑和负载变换器拓扑，确定了基于并联型高频交流母线的半桥变换器加全波整流作为电路拓扑，并优化了电路的结构，分析了基于不同工作状态下的电路结构并建立电流连续模式的数学模型，并与软件仿真结果进行对比。

Due to the high reliability, high stability and low EMI criterions in auxiliary power supply systems, the half-bridge LLC resonant converter is selected for the front-end converter, the AC bus architecture and full-wave rectifier are as well utilized. The turns-ratio between the AC bus and load converter is 1:1. The effect of beads which are used in the load converters to the resonant circuit is analyzed.

根据辅助电源高可靠性、高稳定性、低电磁干扰、良好的高频隔离的要求，通过对不同拓扑类型的分析比较，选择半桥LLC谐振变换器作为前级变换器，交流母线和零式全波整流结构作为后级变换器，在母线和后级变换器的连接上采用1∶1的隔离变压器连接。

The radiation takes the form of high-frequency gamma rays .

这种辐射是以高频伽马射线的形式出现的。

In this paper, the technical conditions of preparing TiO2 ultrafine particle used as photocatalyst by Radio Frequency Plasma Chemical Vapor Deposition is studied, then suggest some methods of controlling the size and crystal type of TiO2 particles. And with the existent equipment prepare TiO2 particle taking on varies size by controlling the flow velocity of Ar as loading gaseity in the system of TiCl4+O2. By characterizing we know the particle prepared is the mix type of rutile and anatase.

本论文探讨了高频等离子体化学气相淀积法制备光催化剂用二氧化钛粉体的工艺要求，提出了一些控制粉体粒径和晶型的方法，并以现有的实验设备为基础，在TiCl_4+O_2体系中，通过控制载气的流量制备出了不同粒径的二氧化钛粉体，通过表征可知所制粉体为金红石型和锐钛型的混晶体。

The subsection integral is used to get a simple function at first in the numerical calculation, and boundary integral is realized by gauss integral on each panel and line, then the complexity and isstability as a result of the high frequency surge function can be avoided.

数值计算中，首先采用分部积分对被积函数进行简化处理，然后采用高斯积分实现面元和线元上的积分，避免了被积函数为高频振荡函数所带来的数值计算的复杂性和不确定性。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。