Correct

导管

/ dǎoguǎn / 
Strokes

Definition

duct/conduit/vessel/catheter

Example

As a Noun

conduit; duct; pipe; tube

1
Lěngquè
冷却
dǎoguǎn
导管

cooling conduit/duct

2
Jīnshǔ
金属
dǎoguǎn
导管

metal conduit

As a Noun

(of animals and plants) vessel; duct; trachea

As a Noun

catheter