hard sphere type equation of state

Hard Roof and Hard Coal

Hard Roof and Hard Floor

dynamic state and static state

Mentality state mentality state

stationary state approximation; steady state approximation

(semi) hard process

3 channels hard cholecystoscope

A Good Man Is Hard to Find

a hard case

a hard nut to crack

a hard row to hoe

a hard sphere unit

Abnormal hard tissue formation in pulp

abrasion-resistent plate by hard bead welding

Acicular hard coke

acid coagulated hard cheese

acid pump of hard porcelain

ACO-hard

actuator hard failure