The transformation frequency from leaf explants was higher than that from stem explants.
且叶切片外植体的转化频率高于茎段外植体。
It was beneficial to add acetosyringone into cocultivation medium for improving transformation frequency.
共培养培养基中添加乙酰丁香酮可提高转化频率。
The results showed the transformation frequency was higher as suspending medium composed MS and YEB to proportion.
实验表明：YEB和MS按适当比例混合作为悬浮培养基转化率较高；
By particle bombardment method, 167 regenerated plantlets were gained from 1160 calli, and the transformation frequency was 17.4%.
通过基因枪转化法轰击1160块的愈伤组织得到167株再生植株，转化率17.4%。
This notion of inter-domain transformation is useful in many fields of study-for example, moving from the time domain into the frequency domain in the field of signal processing.
这种域间转换的概念在很多领域的学习中都很有用—例如，信号处理领域中从时间域移入频率域。
This article analyses the applications and procedures in frequency transformation of multiplier from principle.
该文从原理上分析了相乘器在频率变换中的应用及过程。
This paper tries to discuss the work principle of frequency transformation on the circuit where diodes work on on-off speciality.
该文系统地讨论二极管工作在开关特性下所组成电路的频率变换的工作原理。
Based on the frequency parameters, a new transformation method to determine the response to lightning impulse wave on transmission line with corona is proposed in this paper.
本文在频变参数基础上提出了一种计算电晕线路响应特性的新变换方法，并用其计算了线路的雷电波响应。
Multiplier is the circuit which is conformed of nonlinear elements and can make two signal multiplied so that it can implement frequency transformation.
相乘器是由非线性元件组成，可以实现两个信号的相乘，完成频率变换的电路。
Time frequency analysis method is used to analyze the time domain and frequency domain of seismic waves at the same time according to the principle of wavelet transformation.
时频分析方法是利用小波变换原理，从地震波的时间域和频率域同时对其作出分析。
Fourier transformation in time domain and frequency domain is one of the main methods for modern railway signal detection.
时域分析和傅氏变换的频域分析方法是现代铁路信号检测的主要方法之一。
Calculates the setting range of each parameter in theory, and proves the method of wavelet transformation has higher frequency resolution than the method of FFT.
从理论上计算各个参数的设置范围，并且证明小波变换方法比FFT方法有较高的频率分辨率。
Therefore, taking advantage of AD device and digital filtering technique to realize mixing and other frequency transformation function is a comparatively advanced, novel and practical method.
因此，采用AD器件和数字滤波器技术实现混频等频率变换功能，是一种比较先进和新颖并且实际可行的方法。
The principles of laser frequency transformation and the theory of phase matching in nonlinear optic crystals are also discussed. Based on this theory, Angle of phase match is calculated.
在总结激光频率变换的原理和非线性光学晶体的相位匹配理论的基础上，可以根据相位匹配理论进行晶体的相位匹配角的计算。
Based on the design fundamental of digital LDI ladder filter, a digital LDD ladder high-pass filter is designed by using the frequency transformation in this paper.
本文利用数字梯形滤波器的设计原理，以离散微分器作为积木块，利用频率变换方法，设计出数字LDD梯形高通滤波器。
This paper, on the viewpoint of Lorentz transformation of wavelength of lightwave, derives the frequency equation of Doppler effect of light with tow methods.
本文从光波波长的洛仑兹变换出发用两种方法导出了光的多普勒效应的频率公式。
Synthetic aperture radiometer applies the interferometric principle to sample in the spatial frequency domain and retrieves the image by Fourier or other numerical transformation.
综合孔径辐射计利用孔径综合原理在空间频率域中采样，通过傅立叶变换或其他数学变换获取反演亮温图像。
A method of using fast Fourier transformation (FFT) to calculate the frequency characteristics of discrete mathematical model is introduced.
介绍了利用快速富里叶变换(FFT)计算离散数学模型频率特性的方法。
This article narrated the high-pressured frequency changer in iron-smelting dust removal system transformation analysis as well as the economic efficiency analysis.
】本文讲述了高压变频器在炼铁除尘系统中的改造分析以及经济效益分析。
The factors influencing the frequency of rice transformation mediated by Agrobacterium have been investigated by using 16 commercially important indica and japonica rice cultivars or lines.
以16种重要的籼稻和粳稻栽培品种为材料，研究了影响农杆菌转化水稻频率的有关因素。
To improve beamforming under low signal-to-noise ratio, a method based on stochastic resonance(SR)in a bistable model is investigated by using a frequency scale transformation method.
为了改善低信噪比下波束形成的性能，从双稳态随机共振模型出发，提出了利用频率尺度变换，将随机共振和波束形成结合起来的算法。
Modulation of spatial frequency by means of multidimensional holographic modulating board can bring about transformation from object via frequency to image and implement pseudo-color coding.
通过多维全息调制板对空间频率进行调制，完成物-频-像的变换过程，可实现空间假彩色编码。
Combined with the variable frequency transformation of the induced fan in my company, the variable frequency speed regulation technology is ripe, and the electricity-saving effect is significant.
结合我公司引风机的变频改造，认为变频调速技术已经成熟，节电效果显著，在其他转机上可以应用。
The paper introduces a transformation by PLC and frequency-changer in the light of current lashing problem of drawing-oil tube cleaning machine in oil field enterprises.
本文针对油田企业中抽油管清污机中存在的冲击问题，用PLC、变频器等对其控制进行了改造。
The present invention discloses method and apparatus of microwave signal frequency transformation based on optical fiber stimulated Brillouin scattering.
本发明公开了一种基于光纤受激布里渊散射的微波信号频率变换方法及装置。
In the second phase, techniques to improve the image quality are analyzed, and they are image transformation, frequency enhancement, color image, image recovery, and so on.
第二阶段主要涉及改善图像质量的一些图像处理技术，包括基本的图像变换、频域增强、彩色处理和图像恢复技术等。
The main characteristics of wavelet transform is that some character can well outstanding by transformation and it is an important way to study signal in time-frequency domain.
小波变换的主要特点是通过变换能够充分突出某些方面的特征，它是研究信号时-频分析的重要方法。
The changes of measuring results arising from the transformation of the working frequency are calculated.
本文还对由工作频率变化引起的测量结果的改变作了讨论。
The application and effect of US Derrick overlapping high frequency vibrating fine screen in the transformation for capacity expansion of System 321 in Ekou Iron Concentrator are described.
介绍了美国德瑞克重叠式高频振动细筛在峨口铁矿选矿厂321系统扩能改造中的应用和效果。
The application and effect of US Derrick overlapping high frequency vibrating fine screen in the transformation for capacity expansion of System 321 in Ekou Iron Concentrator are described.
介绍了美国德瑞克重叠式高频振动细筛在峨口铁矿选矿厂321系统扩能改造中的应用和效果。
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