antisepsis and preservation
biological prevention and preservation
collection and preservation
compound heat preservation and energy saving wall
conditions for formation and preservation
correlation between prescription and syndrome
correspondence between prescription and syndrome
correspondence between syndrome and prescription
cultural preservation and promotion
data preservation and playback
diagnosis and prescription
exploitation and preservation principles
Food preservation and transportaion
formation and preservation of oil and gas reservoir
Gas Accumulation and Preservation
heat preservation and adiabatic
heat preservation and dryness
heat preservation and energy-saving
heat preservation and heat insulation