TERMIUM Plus®

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INITIAL PUMPING [6 records]

Record 1 2015-01-12

English

Subject field(s)
  • Physics
CONT

In order to minimize the plasma loss arising from interactions with background gas particles, the plasma is contained in an ultra-high vacuum system. The high vacuum is obtained by using turbo-molecular pumps for the initial vacuum and liquid helium cryopumps for the pumping to very low pressure.

French

Domaine(s)
  • Physique

Spanish

Save record 1

Record 2 2009-02-11

English

Subject field(s)
  • Electrical Appliances and Equipment
CONT

This system limits the closing device to effect a single attempt while the signal to close is maintained. If the device fails to complete a satisfactory close operation whilst the close signal is maintained, then attempts at further reclosing(pumping) are inhibited. An anti-pumping can be achieved in the closing control circuit in various ways, either by using circuit-breaker mechanism auxiliary switches or a timing relay. It only allows a single closing pulse to the closing device, which resets when the initial closing signal is released.

French

Domaine(s)
  • Appareillage électrique

Spanish

Save record 2

Record 3 2008-09-30

English

Subject field(s)
  • Hydrology and Hydrography
CONT

Deferred perennial yield that consists of two different pumping yields. The starting yield is greater than the rate of the perennial yield and results in the depression of the water level. This provides water at lower cost without any detrimental effects on the aquifer. In fact this may reduce initial losses that occur at high water-table conditions such as by evapotranspiration, or subterranean flow to the sea. When the water level is lowered to a predetermined level, then the rate of abstraction is adjusted to the rate of the perennial yield.

French

Domaine(s)
  • Hydrologie et hydrographie

Spanish

Save record 3

Record 4 2007-12-05

English

Subject field(s)
  • Pumps
  • Aircraft Systems
PHR

Beginning, end of pumping stroke.

PHR

Complete, effective, full, initial, long, normal pumping stroke.

PHR

Perform a pumping stroke.

PHR

Pumping stroke begins.

French

Domaine(s)
  • Pompes
  • Circuits des aéronefs
OBS

course d'aspiration; course de pompage : termes uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

PHR

Course d'aspiration du piston.

PHR

Course d'aspiration lente, longue, rapide.

Spanish

Save record 4

Record 5 2002-02-22

English

Subject field(s)
  • Hydrology and Hydrography
  • Speleology
DEF

Difference between the elevation of initial piezometric surface and its position after pumping.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Spéléologie

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
  • Espeleología
Save record 5

Record 6 1986-06-25

English

Subject field(s)
  • Geophysics
CONT

... once a flow has been established by initial pumping from great depth, it may be sustained by thermo-syphon effect by virtue of the higher specific gravity of the less hot overlying water by comparison with the hotter water in the rising well.

French

Domaine(s)
  • Géophysique

Spanish

Save record 6

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