As long as the r ight transmitting frequency is calculate.
只要计算出合适的超声波发射频率,通过逻辑运算电路,超声波空气探测器就能准确地探测输血管路中气泡的有无。
The Relationship of Electrostrictive Effect and the Frequency Properties of Electon Emission in PLZT
电致伸缩与PLZT电子发射频率特性的关系
Previous observations of other neutron stars have shown that the X-rays emitted during bursts display oscillations that correspond to the rotation rate of the neutron stars.
可见：他们对X-射线震荡发射频率和中子星转动频率的关系是有观测根据的。
underwater emission-and direction frequencies
水下发射和定向频率
frequency tolerance of radio transmitter
无线电发射机频率容限
Development and Application of Optical Frequency Domain Reflectometer with High Resolution
高分辨率光频域反射计的发展和应用
The intensity and frequency distribution of the emitted rays are determined by the nature and temperature of the emitting surface;
所发射射线的强度和频率分布由发射表面的性质和温度决定;
It will arrive at the earth with less frequency than a brother photon emitted on the earth.
它到达地球时的频率小于在地球上发射的同种光子的频率。
Strong reflection occurs at a resonance frequency.
在共振频率处,连接部分发生较大的折射。
Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.
假定两个扬声器都发射恒定频率的纯正弦声波。
The Risk Factors of Recurrence of Atrial Fibrillation after Catheter Ablation
影响心房颤动射频消融术后复发率的相关因素
A power-saving single-carrier frequency domain equalization system
一种低发射功率的单载波频域均衡结构
A Calculating Method of the Effective Resistivity for the Extremely Low Frequency(ELF) Transmitting Antenna Site
极低频发射天线场地等效电阻率的计算
Important Development in the Modernization of GPS--GPS L5 and L3 signal are turned on
GPS现代化重大进展——GPS L5和L3频率的发射
Mutation Failure Analysis for PDM Pulse Frequency Compensation of DF100A Shortwave Transmitter
DF100A短波发射机PDM补偿脉冲频率突变故障分析
A Research on the Technology of ULF Transmimting Antenna and Equal-directional Power Radiant
超低频发信天线及其全向等功率辐射技术
radio frequency emission testing
无线电频率放射测试
hydrogen maser frequency standard
氢激射型原子频率标准
cesium atomic beam frequency standard
铯原子射束的频率标准