a closely follow-up strategy

a plane system of closely arranged steel balls

buildings closely related to natural environment

Closely adjacent tunnels

closely cemented

closely coincide

Closely Compacted Pile

closely cultivated vegetation

closely graded

Closely Packed

closely packed grains

closely packed reactor

closely packed segment

closely pitched

closely pitched frame

closely related species

Closely related variety

Closely Spaced

closely spaced array of accelerographs

Closely spaced bias double-tube tunnel