Correct

检漏

/ jiǎnlòu / 
Strokes

Definition

to fix a leak (in a roof, pipe etc)/to check for leaks

Example

As a Verb

hunt/detect a leak

1
Jiǎn
检
lòu
漏
shìyàn
试验

leak test

2
Jiǎnlòuqì
检漏器

leak detector/localizer

3
Jiǎn
检
lòu
漏
dēng
灯

detector lamp