Re: What does 天花閣線射燈 mean?

天花 ceiling
閣 ( could be 角corner ）
線 linear
射燈 spotlights

天花角線 crown (ceiling / wall) mouldings

Reference:
Moulding Glossary - Lowe's
www.lowes.com/projects/build-and-remodel/moulding-glossary/project
Lowe's
Also called cornice moulding, it is used to cover the intersection where the walls and the ceiling meet - usually over a large angle. Crown moulding is always ...