unfilled

adj.

未充填的，没有充填物的；

1. Something canceled, especially a released accommodation or an unfilled appointment.
   撤消被撤消的事物，尤指被放弃的住房或未履行的约会
2. An accumulation, especially of unfinished work or unfilled orders.
   积压堆积物，尤指没完成的工作或未兑现的定单

Lean in healthcare: The unfilled promise?
The effect of oxygen inhibition on an unfilled/filled composite system
Complete or ultraconservative removal of decayed tissue in unfilled teeth
Shell size and shape in Madeiran land snails: do niches remain unfilled?
Effects of one versus two applications of an unfilled, all-in-one adhesive on dentine bonding
True linear polymerization shrinkage of unfilled resins and composites determined with a linometer
Fractured teeth bonded with dentin adhesives with and without unfilled resin
Enamel loss due to orthodontic bonding with filled and unfilled resins using various clean-up techniques.
Correlation between hardness and degree of conversion during the setting reaction of unfilled dental restorative resins.
Influence of the β‐crystalline phase on the mechanical properties of unfilled and calcium carbonate‐filled polypropylene: Ductile...