管 /guǎn/ angolul

duct [ducts]▼(pipe, tube or canal which carries air or liquid from one place to another)
noun
[UK: dʌkt] [US: ˈdəkt]

tube [tubes]▼(a pipe)
noun
[UK: tjuːb] [US: ˈtuːb]

vessel [vessels]▼(tube or canal that carries fluid in an animal or plant)
noun
[UK: ˈve.səl] [US: ˈve.səl]