河流中的推移质和悬移质中较粗颗粒，在床沙中大量存在，属于床沙质。
证实了床沙质、冲泻质与全沙具有统一的挟沙能力。
It has been proved, the bed material load, wash load and total load follow the same rule of carrying capacity.
建坝后水库下泄水流挟带的床沙质含沙量减少，坝下游河床出现冲刷。
The released flow from reservoirs carries less sediment load of bed material than pre? dam periods.
指出目前规范中五点法误差最小，其它方法对床沙质均有较大系统误差。
It has been pointed out that the five-point method specified in the current code gives values with smallest errors, whereas markedly small systematic errors are found in relation to all other methods.
应用推荐