频率

In Small Tail Han sheep, Chinese Merino sheep, Corriedale sheep and South African Mutton Merino sheep, frequency of AA genotype was 0.58, 0.98, 0.96, 1.00, frequency of AB genotype was 0.40, 0.02, 0.04, 0.00, frequency of BB genotype was 0.02, 0.00, 0.00, 0.00, respectively. The ewes with mutation homozygous genotype BB or mutation heterozygous genotype AB had 1.45 at 305 bp of exon 3 of BMP4 gene in the BB genotype in comparison to the AA genotype, and this mutation resulted in an amino acid change: alanine—?aspartic acid. The ewes with genotype BB had 0.61 P

结果表明：小尾寒羊、中国美利奴绵羊、考力代绵羊在INHA基因5'调控区发生了1处碱基突变(316C→T)，南非肉用美利奴绵羊没有发生这种突变；小尾寒羊、中国美利奴绵羊、考力代绵羊、南非肉用美利奴绵羊AA基因型频率分别为0.58、0.98、0.96、1.00，AB基因型频率分别为0.40、0.02、0.04、0.00，BB基因型频率分别为0.02、0.00、0.00、0.00；突变纯合型和突变杂合型小尾寒羊平均产羔数分别比野生型多1.45只P

Aiming at the mathematic model of shafting crankle coupling vibration based on the subsection continuous mass model,the multidimensional frequeney analysis method is put forward and developed.Combining frequency change with shafting configuration parameter,it's more favorable to have direct analysis.The method...

针对基于分段连续质量模型的轴系弯扭耦合振动数学模型，进一步简化并提出多维频率分析方法，将频率变化与轴系的结构参数联系起来，有利于直观分析，同时给出分析振型、共振频率及共振模态等的方法

Cymometer introduce VHDL language with the frequency of the procedure in detail how to prepare a frequency measurement, how to count the frequency.

详细说明：频率计介绍了用VHDL语言编写的频率计的程序，详细编写了如何测频，如何计数频率。

Vibration Hull 船体振动 The Builder to determine natural frequencies of vertical and horizontal vibrations for hull girder and deckhouse to ensure that excitation frequencies of main engine and excitation frequencies of propeller are not similar.

建造方应确定船体纵珩和甲板室的垂直和水平方向振动的自然频率，从而使主机的激励频率与螺旋桨的激励频率不同，对船尾潜在的板振动应加以分析并通过相应的设计加以消除。

After knowing the structure nature frequency, optimize the structure, such as disposal the point of support, reduce the number of elbow, change the thickness of pipe, setting the dilatant and so on, which offer a basic to avoid resonance.

当知道结构固有频率后，便可以通过优化结构，例如重新布置支点、减少弯头数、改变管的厚度、设置膨胀圈等方法，改变结构的固有频率，为避开共振频率打下基础。

In the paper, the theory and methodology of amplitude correction method using average of several points in discrete spectrum, which is suitable for analyzing the dynamic signals of rotating machinery with small varying speed, is proposed and systematically studied.

系统而完整地提出了处理变速机械弱时变响应信号的离散频谱多点平均幅值修正法的理论和方法，严格证明了该方法能精确地计算出平稳信号和频率微弱波动信号的幅值，能近似地计算出幅值和频率均微弱波动的信号的平均幅值，并应用这套理论成功地解释了频率微弱波动信号的幅值谱表现出较严重的"功率泄露"效应的原

This paper discussed the definition of instantaneous frequency and it\'s calculation in continuous and discrete time.

由于瞬时频率是时间的函数，因此可以获得信号任意时刻的频率分布，利用瞬时频率的局部化特征可以有效地揭示信号的内在结构。

The results showed that foraging frequency of Pluvialis dominica was lower than that of Calidris temminckii significantly.

结果表明，金斑鸻的觅食频率显著低于青脚鹬的觅食频率，金斑鸻和青脚鹬的觅食频率均随干扰程度的增加而下降。

Motor unit firing rate is one of the important mechanisms to generate smooth muscle force output. This paper discusses the detection of firing rate from surface electromyographic signals, instead of the invasive needle EMG. The multichannel design is adopted to observe the spatial distribution of EMG firing pattern.

肌肉运动单元活化频率是人体运动控制中枢调节肌肉力量输出的主要机制之一，本文主要是研究从表面肌电讯号分析活化频率之特性，并以多频道记录的方式，分析肢体动作时活化频率在空间之分布模式。

an equivalent model of Al electrolytic capacitor has been studied in this paper. The change law of the equivalent serial capacitance, dissipation factor and impedance of Al electrolytic capacitor has been discussed at different frequencies with Agilent4395A Impedance Analyzer.

研究了铝电解电容器的等效模型，讨论了铝电解电容器在不同频率下，其等效串联电容、介质损耗因子、阻抗随频率变化特性，采用Agilent4395A阻抗分析仪测量了铝电解电容器参数、阻抗-频率特性等。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。