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| Sound pressure reflection coefficient-based thin layer ultrasonic detection method used in non-destructive detection field, involves substituting complex function into formula to obtain thin sound pressure reflection coefficient function. 专利
申请日期: 2013-01-01, 公开日期: 2013-06-12
作者: LIN L HU Z LI G MA Z LUO Z
  收藏 | 浏览/下载：9/0 | 提交时间：2019/12/13 |
| Multiple-layer wave-absorbing coating thickness measuring method, involves realizing accurate measuring coating using self-correlation method and sound pressure reflection coefficient power spectrum method. 专利
申请日期: 2013-01-01, 公开日期: 2013-08-14
作者: LIN L LEI M LI G HU Z LI X MA Z
收藏 | 浏览/下载：3/0 | 提交时间：2019/12/13 |
| Method of measuring ultrasonic round-trip time of thin medium, involves transmitting frequency domain data of sample signal to frequency domain data of reference signal. 专利
申请日期: 2012-01-01, 公开日期: 2012-07-25
作者: CHEN J HU Z LI X LIN L LUO Z
收藏 | 浏览/下载：4/0 | 提交时间：2019/12/18 |
| Method for measuring sound attenuation and sound pressure reflection coefficient of acoustic impedance layer, involves determining reflection coefficient and power spectrum value of low-pass filter by satisfying preset relationship. 专利
申请日期: 2012-01-01, 公开日期: 2012-07-25
作者: CHEN J HU Z LI X LIN L LUO Z
收藏 | 浏览/下载：2/0 | 提交时间：2019/12/18 |
| Resonant compressor for use in e.g. prime motor, has cylinder fixed on base by screw, and weight balancer whose regulator freely slides in guide pipe, where sealing plug is fixed on bottom end of regulator. 专利
申请日期: 2010-01-01, 公开日期: 2010-10-20
作者: LI J HU Z ZHONG H LIN G SUN T
收藏 | 浏览/下载：3/0 | 提交时间：2019/12/24 |
| Decomposition of boron-magnesium-iron ore with sulphuric acid. 专利
申请日期: 1996-01-01, 公开日期: 1996-09-11
作者: HU D LIN Z ZHONG J
收藏 | 浏览/下载：2/0 | 提交时间：2020/01/06 |
