Based on the wavelet transformation and the theory of modal acoustic emission, the dispersion of guided wave propagated in thin plate was investigated by acoustic emission experiment.
基于小波变换和模态声发射理论，通过模态声发射试验的方法确定了管道中导波传播的频散特性。
It has been found that the effects of soil fe and Mn on soil methane emission were caused by affecting soil Eh and root plate.
土壤中铁、锰通过对土壤氧化还原电位及根膜形成的影响而影响甲烷的排放。
The tensile testing of A3 steel plate samples was monitored with acoustic emission.
用声发射监测a 3钢板状试样的拉伸过程。
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.
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。
It is concluded that in the running-in periods using limit screw as the speed-limiting device is better than governor plate for improving the fuel consumption and exhaust emission of the engines.
试验结果表明，在汽车走合期采用限位螺钉限速装置时，对改善发动机的油耗、排污量都比限速片装置优越。
It is consisted of a photo emission source, a XY scanning controllable board, a micro channel plate and a phosphor screen.
它由光平面电子源、XY扫描控制板、微通道板及荧光屏组成。
It is consisted of a photo emission source, a XY scanning controllable board, a micro channel plate and a phosphor screen.
它由光平面电子源、XY扫描控制板、微通道板及荧光屏组成。
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