top-up

复数：top-ups

n.an amount needed to restore something to its former level

The use of 'top-up' experiments to investigate the effect of very small doses per fraction in mouse skin.
Comparison of patient-controlled epidural analgesia and conventional intermittent "top-up"injections during labor.
The epidural "top-up"in combined spinal-epidural anesthesia: the effect of volume versus dose.
The design and interpretation of 'top-up' experiments to investigate the effects of low radiation doses
Revenue management systems and methods with sponsored top-up options
Lack of influence of sequence of top-up doses on repair kinetics in rat spinal cord
Top-up operation experience at the Advanced Photon Source
Stable top-up operation at SPring-8
Esophageal cancer. A prospective phase II study of concomitant-boost external-beam chemoradiation with a top-up endoluminal boost
A randomised comparison of 0.5% bupivacaine with a lidocaine/epinephrine/fentanyl mixture for epidural top-up for emergency caesarea...