英语释义
1
n conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
2
n electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
3
n a hollow cylindrical shape
4
n (anatomy) any hollow cylindrical body structure
5
n an electric railway operating below the surface of the ground (usually in a city)
6
v provide with a tube or insert a tube into
8
v ride or float on an inflated tube
9
v place or enclose in a tube