hatch fish roe 鱼卵孵化
In the Middle Ages, it was thought to hatch from barnacles, and thus was considered "fish" and could be eaten on Fridays.
在中世纪，人们以为本种可来自藤壶，因此视之为“鱼”，并可在星期五吃。
Many fish larvae hatch without fully formed pectoral fins and all hatch without a swim bladder, so similar problems could occur for them.
很多小鱼孵化出来时，胸鳍还没有完全成形，而且所有的鱼孵化时都还没有形成鱼鳔。所以，它们可能会面临相似的不善于游泳的问题。
Automatic control by means of electric heater to hatch young fish before the due date, it is continuous production by means of mechanization, electrification and automation.
电加热自动控制提前人工孵化鱼苗，它采用机械化、电气化、自动化连续生产。
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