称重

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一小火车运行来展示多普勒测速、材料探测、噪声检测、超声测距、轨道称重秤、光电计次等等。

The weighing platform is provided with a pressure sensor , and the machine core comprises a preamplification, an analog-to-digital conversion and a central controller 4.

称重平台，是提供一压力传感器和机床包一，比数位转换和一中央控制器4 。

Weighing filtration membrane is often used to get the dust concentration of environment.However,this method is discommodious and can not get the instantaneous transformation of dust concentration.

环境粉尘浓度测定一般使用滤膜称重方法测得,该方法费时费力,且不能得到瞬时粉尘浓度变化。

The weighing platform is provided with a pressure sensor , and the machine core is provided with a preamplification, an analog-to-digital conversion and a central controller 4.

称重平台，是提供一压力传感器和机床作用，是提供了一，比数位转换和一中央控制器4 。