船艉螺旋桨轴为什么不会进水？大概有3个方式，看看你能听懂哪个【科学火箭叔】

Fan message: Why doesn't the shaft of the stern propeller enter the water? How is the shaft of the stern propeller sealed? In fact, it is not that simple. There are probably three ways. See which one you can understand? Hello everyone, I am your "Uncle Encyclopedia" Uncle Rocket~ Talk about interesting science, and teach the makers who know what to do! Through the description of natural science and social science knowledge, outline the overall outline of the scientific knowledge picture! Want to know more, all in [Science Rocket Uncle] -------------------------------------------------- ------------------------------- If you like me, just subscribe to me, don’t forget to click on the little bells 🔔Your support is precious to me! 💨 https://kexuehuojianshu.page.link/Din... Why doesn't the stern propeller shaft enter the water? There are about 3 ways, see which one you can understand #Uncle Science Rocket#Stern propeller shaft#Stern shaft seal