此前乔瓦·尼巴。蒂斯塔·贝内代蒂(1530- 1590)有相关的振动频率比和音调比之间的关系的理论。
Earlier Giovanni Battista Benedetti (1530-1590) had related the ratio of pitches to the ratio of the frequencies of vibrating objects.
理论上,你可以极快地改变这些设备的频率,让敌人很难干扰或阻碍这些信号。
In theory, you could change the frequency of these devices quite rapidly, making the signals very hard for enemies to intercept or jam.
新的研究发现了理论上可以杀死简单病毒的震动频率。
New research mathematically determined the frequencies at which simple viruses could be shaken to death.
这过程中,两位天文学家发现了某一特定频率的嘶音,恰好证明了当时争议不断的大爆炸理论。
The hiss they found at one particular frequency turned out to be evidence for the then-controversial idea that the universe had been born in a Big Bang.
每一个颗卫星上都装有四个“原子钟”,它们根据量子理论法则,以精确的频率振动。
Each satellite contains four "atomic clocks", which vibrate at a precise frequency, according to the laws of the quantum theory.
本文首先根据多散射中心理论与局部谐振原理,建立了雷达目标在光学区阶梯频率波形激励下的响应方程。
In this paper, the step frequency response equation of optical-region radar target is firstly established by using theories of multiple scattering centers and local resonance.
从理论上讲,至少,这将是最好的选择尽可能高的频率,但在实践中,最高频率可以狂饮了处理器的功耗。
In theory, at least, it would be best to select the highest possible frequency, but in practice, the highest frequencies can guzzle up processor power.
并针对一多自由度系统具体论述了固有频率、阻尼比和振型的识别方法,识别结果与理论结果吻合较好。
The natural frequency, damping ratio and mode shape of a multi-degree-of-freedom system are analyzed and the identified results are in good agreement with the theoretical values.
研究表明,其中第32阶谐振频率上探头的灵敏度最高,这一分析结果与实验结果基本一致,验证了所建立的理论模型的有效性。
It was found that the transducer has the highest sensitivity at the 32nd order resonant frequency, which agrees with the experimental result. This indicates the validity of the model.
理论上基于载流子消耗机制,对激光器型波长转换器进行了小信号分析,给出了频率响应函数。
The small signal analysis of laser diode type all optical wavelength converter is presented using carrier depletion, and the frequency response function is given.
文中对所建立的系统进行了相频和幅频特性的理论分析和实验,合理地解释了此系统的迟滞曲线随输入信号频率变化的原因。
The phase-frequency and amplitude-frequency responses of the system were analyzed and experimented, which reasonably explains why the hysteretic curve changes with input signal frequency.
根据动力学计算理论,提出一种新的方法来修正跳车法实测频率,以获取较准确的自振频率。
According to dynamics computation theory, this article proposed one new method revises jumps off the law actual frequency, gains the accurate base frequency.
分析振弦式传感器的频率敏感机理,理论上说明这类传感器的传感原理。
Frequency sensitivity mechanism and the sensing principle of vibrating wire sensors are developed and analyzed in theory.
文中分析了检测电路的频率特性,且理论上证明了系统的稳定性。
The authors analyze the frequency characteristic of detecting circuit and prove the stability of the proposed detecting system theoretically.
上市公司财务报告作为信息的主要载体,其披露形式、内容及频率便成为理论界与实务界共同关注的热点。
As the listed company finance report is used as the main carrier of its information, its form, contents and frequency of disclosure is the common concerns of theory field and practice field.
实验研究法是国外会计理论研究领域广泛采用的科学研究方法之一,而国内的学者使用这种研究方法的频率很低。
Experimental research method is one of the scientific methods in the field aboard of accounting theory research, while few scholars internal can use the method freely.
语用频率和标记理论证明了排除关系是其基本的语义关系,其他的语义关系是通过添加标记词派生出来的。
It can be proved that except is its basic semantics by mark theory and pragmatic frequency. The other meanings are generated by adding some mark words.
根据RRKM单分子反应理论,得到了相应的频率因子和活化熵值。
We also estimate the activated entropy and the reaction frequency factor by using RRKM theory.
本文利用了解析法对电机定子面内弯曲模态的特征进行了分析,得到了圆环形薄板固有频率的理论表达式。
This thesis utilize the analytic method to stator of ultrasonic motor the curving vibration, receive the theory expression formula of the natural frequency of the round annular sheet metal.
介绍一种低相噪、捷变频x波段频率综合器设计方法,并进行理论分析、计算,最后给出测试结果。
A design method for low phase noise agile X-band frequency synthesizer is presented, the theoretic analysis and calculation is performed and the test results are given.
根据正交分割理论,现在流行的频率分割制(FDM)和时间分割制(TDM)都属于正交分割的范畴。
According to the theory of orthogonal multiplex, frequency division multiplex (FDM) and time division multiplex (TDM) belong to orthogonal multiplex.
线性矩法在水文频率分析中具有理论优势,但因为计算复杂而实际应用较少。
The L-moment method has theoretical advantages in hydrologic frequency analyses, but less practical application because of its complexities in calculation.
受限于DDS芯片的调频转换速率,在大带宽下,DDS产生的线性调频信号相比理论信号可能存在频率失真。
Compared to the theory signal, the chirp produced by DDS under large bandwidth, may have frequency distortion due to the limited chirp-rate.
探讨了贝叶斯理论在水文频率分析计算中的应用。
The application of Bayesian theory to hydrological frequency analysis is investigated in this study.
根据唐纳尔简化理论,推导了柱形爆炸容器固有频率的计算公式。
Based on the Donnell theories, the formula for the inherent frequency of the cylindrical explosion vessel is derived.
理论结果不仅能计算谐振频率,而且还给出散射矩阵等网络参数。
As a result, the network parameters and the resonant frequency are obtained.
对弹性系统的线性响应、频率特性进行了理论和实验研究。
The linear response and the frequency characteristic of the spring system are studied theoretically and experimentally.
根据弹性薄板理论和振动理论,运用边界元法(BEM)分析了薄板弯曲自由振动的频率特性。
According to the elastic thin plate theory and vibration theory, a boundary element method (BEM) was used to analyze the frequency characteristics of a thin plate in lateral free vibration.
方法:根据数字频率合成理论,基于FPGA实现了多频信号源的核心部分。
Method Based on the digital frequency synthesis theory and FPGA, the main part of a multi-frequency signal source is accomplished.
方法:根据数字频率合成理论,基于FPGA实现了多频信号源的核心部分。
Method Based on the digital frequency synthesis theory and FPGA, the main part of a multi-frequency signal source is accomplished.
应用推荐