More than three floors higher than the marine propeller how to make it?

All the videos produced by this channel are designed to convey interesting popular science knowledge to the audience and are absolutely in line with the platform's usage policy.
Hello everyone I am your ”Encyclopedia Uncle” Rocket Uncle ~
Talk about interesting science and teach creative people!
Through the description of natural science and social science knowledge outline the overall outline of the scientific knowledge picture!
If you want to know more knowledge please do it in [Uncle Scientific Rocket]]
Science and Technology Culture-Technology And Culture: • 科技文化-Technology And Cu...
Life Science Popularization-Life Science: • 生活科普-Life Science
Animal Science-Animal: • 动物科普-Animal
Dry Goods Explanation: • 干货讲解
Planet Culture-Planet Culture: • 星球文化--Planet Culture
Gizmos: • 小玩意
Rocket Uncle Teach Science: • 火箭叔教科学
Astronomy-Astronomy: • 天文学--Astronomy
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kexuehuojiansh...
Science Rocket Uncle# Science Popularization# Culture

[@renhang8925]

日常常见的潜水泵叶轮端密封轴
有个绕轴弹簧顶其二头二对互耐
磨特殊金属垫片结构的外是水内
是散热及电绝缘变在器油是类似？

[@kevinwu4560]

请不要炒冷饭了我滿喜歡你的channel

[@chaothai6351]

老视频重新剪辑排序，再上传到有管，已经延续好长一段时间了。不客气的说，2年多的时间就没有新作品问世了。

[@pen8376]

@@chaothai6351维持流量和最低收入吧。估计本人在干别的。

[@joomla123123]

科學冷饭叔

[@chaothai6351]

@@joomla123123 准确。不确定是不是搬运的视频？以前也看到过国内优秀的视频被搬运到油管。

[@Khootravels]

​@@chaothai6351雙方互搬🤣🤣🤣

[@JeffL-d9o]

大赞视频

[@stephensu4371]

3:23，一般是鋁青銅因其強度和耐腐蝕性

[@lovetw001]

要加鎳，不然易被海水腐蝕

[@kinggnej5041]

0:56 而且大都還是激素呢.....⁉...萬萬沒有想到....輪船還得必須打激素......才會引爆
性衝動........‼

[@Joker-yb6ks]

偉大祖国太偉大了