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.

该展台用个小火车运行来展示多普勒速、材料探、噪声检、超声距、轨道称重秤、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，是提供个压力传感器和机床的核心包个预，类比数位转换和个中央控制器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.

环境粉尘浓度的般使用滤膜称重方法得,该方法费时费力,且不能得到瞬时粉尘浓度的变化。

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，是提供个压力传感器和机床的核心作用，是提供了个预，类比数位转换和个中央控制器4 。