Englishfor English speakers
subsurface
—
adjective
beneath the surface
subsurface materials of the moon
multizone
adjective
—
of or pertaining to more than one zone
flow
Verb
—
If something flows, it moves in a smooth and regular way.
The river flows gently to the sea.
flow
Noun
—
A flow is a smooth regular movement of a liquid, gas, etc.
A major accident is blocking the flow of traffic on Yonge St., just north of Queen.
regulator
—
noun
any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc
—
noun
an official responsible for control and supervision of a particular activity or area of public interest
—
noun
(= governor)
a control that maintains a steady speed in a machine (as by controlling the supply of fuel)