Question

帮忙翻译一下！谢谢~急！！！

Background
In August 2000, marco visited Xinglongzhuang to investigate the possibility of automatically recognising rock and coal. Underground
measurements were taken during an underground visit to the mine. These measurements were roughly evaluated directly after this trip and then in June 2004 in more detail.
Results from June 2004
The measurements showed that it is possible to detect the difference between rock and coal using special acoustic sensors. The necessary frequency band width and dynamics of the expected amplitudes has not yet been conclusively clarified. It would be advisable to make more sophisticated sensors to begin with and
then to reduce their complexity to the actually required data later on.
Description of the hardware used for the preliminary tests
The sensor was constructed from a marco piezo multi-layer sensor. We normally use these sensors as transmitting sonic sensors. This type of sensor achieves extremely high amplitude and dynamics in
the frequency range (0.1Hz - 300 kHz). The sensor was mounted with a magnet and seismic mass to enable easy attachment for recording data in the face (see figure on the left). The data were recorded via the sound input of a video camera. To begin with, we had no information on possible frequencies (noises) during mining for the conveying process. The gob shield has to be moved during mining. This movement takes place in two different directions. The
rear gob shield is moved up and down and the shutter fitted in
this shield is extended and retracted. The selected sensor
position (red arrow) is definitely not ideal as the impact and
sliding noises are directed to the sensor via several
components. The first measurement of the noises came from
the movement of the rear gob shield and the shutter. These
movements showed no recognisable signal in the frequency
range permitted by the seismic sensor and registered by the
sound input of the video camera.

Answer 1

Background
In August 2000, marco visited Xinglongzhuang to investigate the possibility of automatically recognising rock and coal. Underground
measurements were taken during an underground visit to the mine. These measurements were roughly evaluated directly after this trip and then in June 2004 in more detail.
Results from June 2004
The measurements showed that it is possible to detect the difference between rock and coal using special acoustic sensors. The necessary frequency band width and dynamics of the expected amplitudes has not yet been conclusively clarified. It would be advisable to make more sophisticated sensors to begin with and
then to reduce their complexity to the actually required data later on.
Description of the hardware used for the preliminary tests
The sensor was constructed from a marco piezo multi-layer sensor. We normally use these sensors as transmitting sonic sensors. This type of sensor achieves extremely high amplitude and dynamics in
the fr
背景

2000年8月，马访问兴隆调查的可能性，自动承认岩和煤。地下

测量过程中采取了一个地下访问地雷。这些测量大致评估后，此行的直接，然后在2004年6月在更多细节。

结果从2004年6月

测量表明，它是有可能的检测之间的区别岩石和煤炭使用特殊音响传感器。必要的频带宽度和动态的预期幅度尚未最后澄清。最好是让更先进的传感器，并开始

然后，以减少其复杂性的实际需要的数据上。

说明硬件用于初步试验

该传感器是建造从马可波罗压电多层传感器。我们通常使用这些传感器传递声波传感器。这种类型的传感器实现了极高的振幅和动态

的神父

Answer 2

背景

2000年8月，马访问兴隆调查的可能性，自动承认岩和煤。地下

测量过程中采取了一个地下访问地雷。这些测量大致评估后，此行的直接，然后在2004年6月在更多细节。

结果从2004年6月

测量表明，它是有可能的检测之间的区别岩石和煤炭使用特殊音响传感器。必要的频带宽度和动态的预期幅度尚未最后澄清。最好是让更先进的传感器，并开始

然后，以减少其复杂性的实际需要的数据上。

说明硬件用于初步试验

该传感器是建造从马可波罗压电多层传感器。我们通常使用这些传感器传递声波传感器。这种类型的传感器实现了极高的振幅和动态的神父