on call

adj.

随叫随到的，待命的；

On call
On Call
On Call.
Geeks On Call Security and Privacy: 5-Minute Fixes
Are weekend handovers of adequate quality for the on-call general medical team?
System and method for payment on call in a networked environment
PAYMENT ON CALL IN A NETWORKED ENVIRONMENT
System and method for payment on call in a networked environment
Family Matters: does this mean the end of 24-hour on-call shift for Canadian residents?
Association of workload of on-call medical interns with on-call sleep duration, shift duration, and participation in educational act...
On Jumps in Common Stock Prices and Their Impact on Call Option Pricing
Laparoscopic performance after one night on call in a surgical department: prospective study.
Optimizing Bernoulli routing policies for balancing loads on call centers and minimizing transmission costs