What does BTL stand for?
BTL stands for "building tightness limit (building tightness)"
How to abbreviate "building tightness limit (building tightness)"?
"building tightness limit (building tightness)" can be abbreviated as BTL
What is the meaning of BTL abbreviation?
The meaning of BTL abbreviation is "building tightness limit (building tightness)"
What does BTL mean?
BTL as abbreviation means "building tightness limit (building tightness)"
