1.
Research on target depth classification in low frequency acoustic field of shallow water
浅海低频声场中目标深度分类方法研究
2.
Study on Characteristics and Measurement Methods of the High-power Low-frequency Ultrasonic Fields for Cleaning;
大功率低频超声清洗声场的声场特性及测量方法研究
3.
Test Method Research for Low-frequency Noise Testing of JFETs
结型场效应晶体管低频噪声测试方法研究
4.
transistor low-frequency noise-meter
晶体管低频噪声测试仪
5.
A loudspeaker designed to reproduce bass frequencies.
低频扬声器设计用来再现低音频率的扬声器
6.
very low frequency band radiated field system
甚低频带辐射场系统
7.
The frequency effect of a low-MHz bi-beam ultrasonic irradiation;
低频双束超声辐照的频率效应(英文)
8.
free-field frequency response of microphone
传声器自由场频率响应
9.
Design of Low-Power CMOS RF Low Noise Amplifier
低功耗CMOS射频低噪声放大器的设计
10.
diffuse-field response of microphone
传声器扩散声场频率响应；传声器扩散场响应
11.
The Design and Applications of Low Power,Low Frequency,Low Noise Medical Chip
低功耗、低频率、低噪声医学芯片的设计及应用
12.
A low murmur sifted through the house;
一阵低语声掠过场内；
13.
Research on Multi-channel Adaptive Active Noise Control Systems for Reducing Vehicle Interior Low Frequency Noise;
车内低频噪声多次级声源有源消声系统研究
14.
SUPERPOSITION OF ELF NOISE MAGNETIC FIELD MITIGATES THE ADVERSE SPACE LEARNING OF RATS IN WATER MAZE TO CW MICROWAVE FIELD(EXPERIMENTAL REPORT)
叠加极低频噪声磁场诘抗连续微波对水迷宫大鼠认知行为负作用的实验观察
15.
Marantz2130- OK bass, midrange and treble forward and" light" sounding.
马兰士2130低音不错，中频和高频前倾，属亮声机。
16.
Marantz 2130 - OK bass, midrange and treble forward and "light" sounding.
69马兰士2130低音不错，中频和高频前倾，属亮声机。
17.
Low Noise Frequency Conversion Technology and the Improvement on Rubidium Frequency Standard;
低噪声频率变换技术及铷原子频标的改进
18.
Design and Fabrication of Dual-band Antenna and RF Front-end LNA for Mobile Phone
手机双频天线及射频前端低噪声放大器的研制