fish migration meaning in Chinese

鱼类回游
鱼类洄游

In order to make the fishway design more reasonable and make the fish migration and semi - migration passing the fishway successfully , each country attaches great importance to research of fishway design
为了使鱼道设计更合理，使洄游、半洄游鱼类能顺利通过鱼道，各个国家都很重视鱼道设计的研究。
According to the test and observation indicated that mostly fish goes upstream and far away the sluiceway when fish migration , so fishway designed by us was arranged in the right bank of reservoir area and far away from the electricity generation hole intake upstream about 280 meters in order to induce the fish entering the fishway
根据试验和观察表明，鱼类洄游时大都沿岸上溯，同时应远离泄水道，故我们的鱼道进出口是布置在库区右岸，离发电洞进口上游约280米处，以利诱导鱼类进入鱼道。