声发射计数率峰值与应力水平有关,峰值的次数与破坏后主裂缝的条数相对应。
The peak value of acoustic emission counts rate depends on stress state; and the amount of peak value is equal to that of major crack after failure.
通过密切观测地球的“呼吸”机理,新发射的卫星将如同会计师一样,定期向地面返回审计数据。
The new satellites will work as carbon accountants by keeping a close eye on how the Earth breathes and returning regular audits.
作者的主要工作就是设计数字电视发射机中的本振频率源,这是上海明珠公司数字电视发射机开发项目的一个重要部分。
The author's main work is the development of the lo (local oscillator) in DTV transmitter, it is one of the important research projects planned by Shanghai Mingzhu Company.
本文介绍了用于测量穆斯堡尔发射谱的一种探测器——雪崩计数器,详细讨论了它的性能和特点。
In this paper a parallel-plate avalanche counter for measuring Mossbauer emission-spectrum is described, the properties and the characteristics of the detector are discussed in detail.
方法测定20只豚鼠听性脑干反应(ABR)阈和畸变产物耳声发射(DPOAE)振幅,观察耳蜗毛细胞静纤毛变异形态,计数变异的毛细胞数目。
Methods Auditory brainstem response(ABR)and otoacoustic emission of distortion products(DPOAE)were assayed to 20 guinea pigs, then variant hair cells were observed and counted.
在热震损伤材料的SENB抗弯试验中采用了声发射技术。一般说来,热震损伤程度越严重则声发射总计数越多。
The technique of acoustic emission has been employed in the SENB bending test for the thermal damaged materials.
本发明能够实现主动式测量时发射信号和被测量信号时间间隔的高精度计数。
The active measurement method is capable of realizing high-precision counting for time intervals of the transmitted signals and the measured signals during active measurement.
冬季的侧柏切片,其超声发射信号量和持续时间均比夏季的少,幅度、振铃计数和上升时间差别不大。
The amount of signals and duration were smaller than in summer, and amplitude, rise-time, ringing counts were not very different.
根据需要选择声发射累计数、震级-频度关系中的b值变化规律,研究了砂岩岩爆的前兆信息。
By choosing The Times of cumulative AE events and based on the b-value variation in the relation between magnitude and frequency, the precursor information of rock burst was studied.
根据需要选择声发射累计数、震级-频度关系中的b值变化规律,研究了砂岩岩爆的前兆信息。
By choosing The Times of cumulative AE events and based on the b-value variation in the relation between magnitude and frequency, the precursor information of rock burst was studied.
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