苏联列宁格勒州“波罗的海”养鱼场安装了20台能自动喂鱼的机器。在电子计算机的控制下,喂鱼机能根据鱼的需要自动向水中抛撒粒状饲料。这种自动喂鱼机适用于饲 The “Baltic Sea” fish farm in the state of Leningrad in the Soviet Union installed 20 automatic feeding machines. Under the control of a computer, the fish feeder automatically dispenses granular feed into the water, depending on the needs of the fish. This automatic feeding machine is suitable for feeding