1.
The Fourth Harmonic Generation in BBO Crystal;
BBO晶体四倍频的紫外激光器研究
2.
This thesis presents the design and manufacture of a V-band frequency quadrupler.
本文研究了V波段四倍频器的设计和研制方法。
3.
The Anti-jitter Fourfold Frequency Multiplication Circuit Design of a Rotary Encoder Based on FPGA
基于FPGA的旋转编码器抗抖动四倍频电路设计
4.
Fourth harmonic all-solid-state low power ultraviolet laser by BBO crystal
BBO晶体四倍频全固态小功率紫外激光器
5.
The Analysis and Research of Four Fold-frequency Method Based on Incremental Photoelectrical Encoder Pulse
光电码盘脉冲信号四倍频检测方法的分析与研究
6.
Radio-over-Fiber System for Frequency-Quadrupled Millimeter-Wave Generation by External Modulator
采用外调制器产生四倍频的光载毫米波光纤无线通信系统
7.
Introduces circuit on photoelectric encoder, and improves a method of precision, analyzes the principle of circuit about the quadruplicated frequency.
介绍了光电编码器结构及相关电路与提高测量精度的方法,分析了四倍频等电路的工作原理。
8.
octave and third octave spectrogram
倍频程及1/3倍频程频谱图
9.
The Frequencies of Autotetraploid Rice with Polyembryonic Seedling and Its Reproductive Characteristics;
同源四倍体双胚苗水稻的双胚频率及其生殖发育特性
10.
one-tenth decade
１／１０的十倍频程
11.
A frequency multiplier which multiplies the frequency of an input signal by two.
使输入信号的频率加倍的一种倍频器。
12.
Octave-band and fractional-octave-band filters
GB/T3241-1998倍频程和分数倍频程滤波器
13.
Diploid, triploid, tetraploid, pentaploid and hexaploid hybrid plants have been recovered from protoplast fusion, among which the tetraploid ones accounted for almost90%.
这些体细胞杂种有二倍体、倍体、倍体、倍体和六倍体,但主要是四倍体。
14.
A PLL Frequency Synthesizer with High Multiple-Frequency
一种多倍频选择的高倍频锁相环频率合成器
15.
A number four times as great as another.
四倍量是另一个四倍的数量
16.
four times as great or many.
四倍一样大的或者和四倍一样多的。
17.
A Radio Frequency Multiplier for the Rubidium Vapor Cell Frequency Standard
一种铷原子频标射频倍频单元的实现
18.
Studies on Establishment of High Frequency Regeneration System and Transformation of BADH Gene of Tetraploid Black Locust;
四倍体刺槐高频再生体系的建立及农杆菌介导的甜菜碱醛脱氢酶基因转化的研究