Assertion: diver's system | /r/HasProperty | developed
Facets:
value: more recently
type: TEMPORAL
Source sentences:
text: Several such systems have been developed using different equipment and suited for different circumstances.
text: More recently, through-water systems have been developed which do not use wires to transmit the signal.
text: Generally it is a fixed volumetric fraction of the respiratory flow, but more complex systems have been developed which exhaust a close approximation of a ratio to the surface respiratory flow rate.