查询词典 khz

These drivers are biamped with a 250-watt LF amplifier and a 120-watt HF amplifier, which provides, according to JBL, a-flat +1 dB/-1.5 dB response from 50 Hz to 20 kHz, with a low frequency extension all the way down to 36 Hz.

这些驱动程序biamped与250瓦低频放大器和1 120高频放大器，提供瓦，据JBL，一坪从50赫兹1 dB/-1.5分贝至20千赫的反应，具有低频扩展名的所有一路至36赫兹。

RIT control. The receiver incremental Tuning control is used to fine tune to the received singal . This is used in USB and LSB modes to obtain maximum clarity of reception, and in CW mode to control the pitch of the beat note. The RIT Control can tune the receive frequency about 2.3 KHz. This control will not transmit frequency, or the frequency display, but will change the receive frequency.

RIT control ：收信机微调旋钮是用微调调整使你能收到被认为是标准的信号，在USB和LSB模式使用可以获得最清晰的接收，在CW模式可以控制节拍的音调，这个旋钮能在2.3KHz左右调整接收频率，它不影响发射频率和显示频率，但将改变接收频率。

RIT control. The receiver incremental Tuning control is used to fine tune to the received singal .This is used in USB and LSB modes to obtain maximum clarity of reception,and in CW mode to control the pitch of the beat note. The RIT Control can tune the receive frequency about 2.3 KHz. This control will not transmit frequency, or the frequency display, but will change the receive frequency.

RIT control ：收信机微调旋钮是用微调调整使你能收到被认为是标准的信号，在USB和LSB模式使用可以获得最清晰的接收，在CW模式可以控制节拍的音调，这个RIT控制可把接收的频率调整约2.3KHz左右，它不影响发射频率和显示频率，但将改变接收频率。

The system adopts CPU board with fast processing elevator operational program, data signal exchange, and HMI screen, which can make sure reliable operation and high speed. It also has PHILIPS SJA1000T field CAN bus, 82C251 Bus interface and the latest serial storage technique to record data. The functions of external watchdog and control chip internal watchdog compose two-level procedure monitoring, so as to ensure the normal operation of the control program. Heavy-current switch power LM2576 ensures the stable system working power, which has low requirements for the power supply. High-speed optoelectronic isolator and internal frequency division technology can make NW3P08-41C (42C) CPU receive the input impulse up to 1-phase 100 KHZ*2 CHANEL or 2-phase 50KHZ*1 CHANEL 32bit.

系统采用原装中央处理板，具有快速的处理电梯运行程序、数据信号交换、显示屏人机界面；确保可靠运行电梯控制程序；且速度快，PHILIPS 公司 SJA1000T 现场 CAN 总线；以及 82C251BUS 接口，最新串行存贮技术记录数据；外部看门狗及控制芯片内部看门狗功能组成两级程序监视，确保控制程序正常运行；大电流开关电源 LM2576 确保系统工作电源稳定，且对供电电源要求低；高速光电隔离光藕及微机内部分频技术，使 NW3P08-41C(42C)中央处理板可接收高达 1 相 100KHZ*2通道或 2 相 50KHZ*1通道，32bit 的计数脉冲。

Business:Δ production and marketing 15 KHZ, 20KHZ various sizes of plastic ultrasonic welding machine;Δ plastic production and marketing of various specifications High Frequency Weld, synchronous links, induced induction machine;Δ production and marketing of plastic welding machine rotary;Δ electric production and marketing of plastic weld Machine;Δ production and sales of various non-standard specifications for plastic welding machine;Δ professional design and manufacture of various specifications welding the first mold all kinds of welding and maintenance equipment; Note: welding the first mold and mechanical maintenance warranty period of three months, the new machine - Use of one year.

经营范围：Δ产销15KHZ、20KHZ各种规格超声波塑胶熔接机；Δ产销各种规格高周波塑胶熔接、同步熔断、诱导感应机；Δ产销旋转式塑胶熔接机；Δ产销电热式塑胶熔接机；Δ产销各种规格非标式塑胶熔接机；Δ专业设计制造各种规格焊头模具及维修各类焊接机械设备；注：焊头模具及机械维修保用期三个月，新机器保用期一年。

ML dichlorovs(30 mg/L) is oxidized by ultrasonic in 100 mL beakers. When power is 200 W,600 W and 800 W,the removal is low,for the largest removal is less than 20% at the treatment of 60 min, while the removal is 48% when power is 1000 W. On the mean while, cost raises a lot. Consequently, treatment of dichlorovs by ultrasonic is worthless.

超声波法在频率20 kHz，声强为0.3 W/cm2，0.9 W/cm2和1.4 W/cm2（对应的超声功率分别为200 W，600 W和800 W）的条件下处理60 min时的敌敌畏的最大去除率都不超过20％；声强为1.7 W/cm2（1000 W）处理60 min时去除率达48％，但此时处理成本较大，不具实际应用价值。

Results In three Hank's solution infused cochleas, the thresholds of IC potential were kept in the normal level and no hair cell loss was found 14 days after the beginning of the infusion, suggested that the pump implantation and Hank's solution infusion had no significant effects on the cochlear functions. In contrast, threshold shifts of IC potentials and hair cell loss were found in two BSO infused animals, suggested that the infused solution had distributed into the whole cochlea.

结果 应用渗透压泵耳蜗灌流Hank液后，下丘电位阈值维持正常，耳蜗毛细胞无损伤；灌流BSO液14天后，所测频率(1、 2、 4和8 kHz)的下丘电位阈值平均升高28 dB，内耳毛细胞平均缺失39.3%，缺失分布于耳蜗各回，表明渗透压泵工作良好。

C Over a frequency range of 0 – 100 kHz, the measurement circuitry is to have a frequency response (ratio of indicated to actual value of current) that is equal to the ratio of the impedance of 1500 ohm resistor shunted by a 0.15 F capacitor to 1500 ohms.

频 率高于0-100KHz，测量电路有一个频率响应(标记电流和实际电流的比值)并且等于1500的输入阻抗并联上一个0.15F ，的电容与1500的比值。

Furthermore, we shall prove that a minimum theoretical sampling frequency of order 6.8 kilohertz is required to convey a voice channel occupying the range 300 HZ to 3.4 Khz.

而且，我们将证明，为了转换频率范围为300HZ—3.4KHZ的话路信号，理论上最小采样频率须为6.8khz。

The invention takes linseeds as the raw material, the solvent is used to extract the linseed oil under the ultrasonic that the frequency is between 20 and 100 kHz and the strength is between 1 and 40W/cm.

本发明以亚麻籽为原料，在频率为20-100kHz，强度为1-40W/cm 2 的超声波下用溶剂提取亚麻油。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。