完备 (wán bèi) means 'complete and thorough' — it describes a system, plan, or set of facilities that has all necessary parts and is fully equipped. It is more objective than 完美 (wán měi 'perfect'), which implies an ideal without flaws, and emphasizes thoroughness rather than just wholeness (完整 wán zhěng) or having all items present (齐全 qí quán).