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1)  Onset temperature difference
起振温差
2)  onset temperature
起振温度
1.
For example,according to the range analysis and variance analysis,the sensitive factors to the onset temperature at the hot end of the first stage stack were the charging pressure,the heating power of the traveling-wave stage and the heating power of the standing-wave stage in sequence.
为了研究级联型热声发动机级间运行参数组合方式对系统性能的影响,采用综合的正交试验法,以驻波级回热器热端的起振温度为例,通过正交试验极差分析和方差分析得知充气压力是最敏感的影响因素,其次是行波级的加热功率,再次是驻波级加热功率。
2.
A miniature thermoacoustic prime mover was built up,and the experiments had been done to observe the influence of structural and operating parameters on the sound amplitude,resonance frequency and onset temperature of the system.
制作了1台微型热声驱动器的实验模型机,着重研究结构与操作参数对系统的声波幅值、谐振频率和起振温度等性能参数的影响情况。
3)  threshold temperature for oscillation
起振温度阈值
4)  critical temperature gradient
起振温度梯度
1.
The result is that in the frequency domain and for small amplitudes the model reduces to the standard linear theory and it can forecast the critical temperature gradient; in the time domain a.
结果表明,在频域内和线性条件下,该模型简化为经典的线性热声模型,可以预测热声驱动器的起振温度梯度;在时域内和非线性条件下,该模型可以模拟热声系统内的瞬态压力波由初始增长,经过非线性演化,最终达到饱和的全过程;最后,还讨论了板叠上的温度差对饱和压力波的影响。
5)  Log-amplitude fluctuation variance
对数振幅起伏方差
1.
On the basis of introducing the channel and system model of wireless optical communication,average bit error rate of uncoded and RS coded system with channel side information were analyzed,and compared with Turbo coded system from the following two aspects:received optical power and Log-amplitude fluctuation variance.
在介绍无线光通信信道及系统模型的基础上,推导了无线光通信未编码系统和RS编码系统在已知信道边信息条件下的平均误码率,从接收光功率和对数振幅起伏方差方面对RS码编码系统和Turbo编码系统的性能进行比较。
6)  Onset [英]['ɔnset]  [美]['ɑn'sɛt]
起振
1.
Theoretical Study on Onset of Standing-wave Thermoacoustic Engine;
驻波型热声发动机起振机理的理论分析
2.
In order to take full use of energy of low quality, further decreasing onset - temperature of thermoacoustic engines may be an effective approach.
为了充分发挥热声发动机可利用低品位热能的优势,进一步降低系统的起振温度对热声热机的应用具有重要意义。
补充资料:点振子振动和点电极振子振动
分子式:
CAS号:

性质:又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内,形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积,且与厚度有适宜的匹配关系。在交变电场作用下,沿厚度方向产生振动,其振幅随着至电极中心距离的增加,呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄,有时考虑到压电陶瓷自身强度太低,可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。

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