axial plunger type motor
38CrMoAl steel axial plunger
axial rotary plunger motor
plunger type metering pump
single-acting plunger type
box type oil burning heating furnace
closed power oil type pump
meshwork - carpet type oil and gas pool - forming system
meshwork-carpet type oil and gas pool-forming syst
modified oil type rust preventive
rock cavern type oil depot
second tertiary type oil layers