一、定义和历史鱼闸和升鱼机之所以合写在一起,并非它们的运输方式有任何相似之处,而是由于二者都能代替通常的鱼道而达到使鱼过坝的目的。鱼闸被定义为这样一种升鱼过坝的装置,鱼从尾水水位或通过短鱼道进入闸室后,向闸室充水,直至水位与前池水位齐平时关闭,这样,以便鱼游至坝上的前池或水库。它与船闸相类似,事实上,鱼有不少机会经过船闸到达上游。升鱼机是用机械的方法送鱼过坝,例如,在铁轨上运移的水箱、水 I. DEFINITIONS AND HISTORY The reason that fish gates and lifts are co-written is that they do not have any similarities with the mode of transport, but rather that they both serve the purpose of crossing the fish course by replacing them with normal fish tracks. Fish brakes are defined as such a fish crossing the dam device, the fish from the tailrace water level or through the short fish into the lock chamber, the chamber filled with water until the water level and the front of the pool level is closed, so that the fish Tour to the dam before the pool or reservoir. It is similar to the lock, in fact, the fish have many opportunities to reach upstream through the lock. Lifting machine is a mechanical method to send fish across the dam, for example, on the rail transport tank, water