lower layer

land-based lower layer (LBLL)

Sea-Based Lower Layer (SBLL)

at lower echelons

Forces of Lower Readiness (FLR)

lower deck (the)

lower deck

lower firing saddle

lower receiver

lower right margin

lower unit

lower glacis plate

lower elevating screw

lower bearing

lower torque link

lower explosive limit

wing lower surface

hollow shaft (of lower coaxial shaft)

lower stratosphere

upper and lower coaxial rotors

lower loop of a gun sling

lower-level intelligent control

lower handguard, forend

use lower value for more filtering

bridge launcher/ layer

gun layer

Joint Aerial Layer Network (JALN)

land-based upper layer (LBUL)

layer tinting

mine layer

Sea-Based Upper Layer (SBUL)

upper layer

automatic gun layer