Soil w ater characteristic curve is one of the im portant graphs reflecting the fundam entalpropeties ofunsaturated soils, w hich is usually determ ined by the pressure plate test.
土水特征曲线是表征非饱和土基本性质的重要曲线之一，一般由压力板试验测定。
It is mainly introduced Development process of handwritten multimedia system, resistance pressure panel, A/D sensor, the program of drivers and application.
电阻式压力板、A/D转换、驱动程序的设计和相应的应用程序的设计。