Mar 28, 2009 19:13
15 yrs ago
English term
Each word needs thorough attention.
Native in: Russian 
Works in: English to Russian, Russian to English, German to Russian, and 1 more.
(Lw), (Lp)
English to Russian
Tech/Engineering
Electronics / Elect Eng
BELOW 90 dB(A) AT 0.0m FROM MAIN STACK EXIT(Lw) AND/OR BELOW 75 dB(A) AT 1.0m FROM MAIN STACK EXIT(Lp)
Речь идет о чертеже main stack silencer. Lp быть может нефтяной газ (ранее о нем идет речь), а Lw?
Спасибо.
Речь идет о чертеже main stack silencer. Lp быть может нефтяной газ (ранее о нем идет речь), а Lw?
Спасибо.
Proposed translations
(Russian)
| 3 +2 | --> |
Enote
|
| 2 | >> |
Victor Sidelnikov
|
References
| Не поместилось в поддержку Enote |
stasbetman
|
Proposed translations
+2
1 hr
Selected
-->
это обозначения
Lw - уровень акустической мощности (sound power level)
Lp - уровень акустического давления (sound pressure level)
Измеряются в дБ
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Note added at 1 час (2009-03-28 21:12:46 GMT)
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http://www.osha.gov/dts/osta/otm/noise/health_effects/soundp...
Lw - уровень акустической мощности (sound power level)
Lp - уровень акустического давления (sound pressure level)
Измеряются в дБ
--------------------------------------------------
Note added at 1 час (2009-03-28 21:12:46 GMT)
--------------------------------------------------
http://www.osha.gov/dts/osta/otm/noise/health_effects/soundp...
4 KudoZ points awarded for this answer.
Comment: "большое спасибо."
43 mins
Victor Sidelnikov
Russian Federation
Russian Federation
Native in Russian
Specializes in field
Russian Federation
30+ years in technical translation, Ph.D
Native in: Russian
Works in: English to Russian, Russian
Related KudoZ points
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698
>>
Скорее всего, это расстояния относительно выхода глушителя и это просто обозначения. Тем более, если имеются нижние индексы. L - обычно это длина.
Reference comments
2 hrs
stasbetman
Ukraine
Ukraine
Native in Russian
Ukraine
Native in: Russian 
, Ukrainian
Works in: English to Russian, German to Russian, Russian to English, and 11 more.
Reference:
Не поместилось в поддержку Enote
http://www-wds.worldbank.org/servlet/WDSContentServer/WDSP/I...
What is Sound Power and Sound Power Level?
The Sound Power of a noise source is the total sound energy radiated per unit time, and the unit is the
watt (W). In acoustics the Sound Power of a noise source is usually expressed as a Source Power
Level, in decibels, with a reference Sound Power of 10-12W. The symbol used for Sound Power Level
is Lw e.g. Lw = 90 dB re 10-12W.
The Sound Power level of a noise source is useful in acoustic modelling, since it has a fixed value and
can be calculated from the measurement of Sound Pressure Levels around the noise source.
ISO Standards 3744 and 3746 provide recognised methods of calculating Sound Power levels of noise
sources, and can be used to ensure noise limits guaranteed by equipment vendors are satisfied.
2. What is Sound Pressure and Sound Pressure Level?
Sound Pressure is the alternating component of pressure at a point in a sound field and the unit is the
Pascal (Pa). In acoustics, Sound Pressure is normally expressed in terms of the Sound Pressure
Level in dB, with a reference Sound Pressure of 2 x 10-5Pa, and the symbol is Lp e.g. Lp = 70 dB re
2 x 10-5Pa.
Whereas the Sound Power level of a noise source is a constant, the Sound Pressure Level will be
affected by several factors relating to the physical environment surrounding the noise source, as
described below.
--------------------------------------------------
Note added at 2 час (2009-03-28 21:24:44 GMT)
--------------------------------------------------
LP=sound pressure levels (metric units)
LW=sound power levels (metric units)
What is Sound Power and Sound Power Level?
The Sound Power of a noise source is the total sound energy radiated per unit time, and the unit is the
watt (W). In acoustics the Sound Power of a noise source is usually expressed as a Source Power
Level, in decibels, with a reference Sound Power of 10-12W. The symbol used for Sound Power Level
is Lw e.g. Lw = 90 dB re 10-12W.
The Sound Power level of a noise source is useful in acoustic modelling, since it has a fixed value and
can be calculated from the measurement of Sound Pressure Levels around the noise source.
ISO Standards 3744 and 3746 provide recognised methods of calculating Sound Power levels of noise
sources, and can be used to ensure noise limits guaranteed by equipment vendors are satisfied.
2. What is Sound Pressure and Sound Pressure Level?
Sound Pressure is the alternating component of pressure at a point in a sound field and the unit is the
Pascal (Pa). In acoustics, Sound Pressure is normally expressed in terms of the Sound Pressure
Level in dB, with a reference Sound Pressure of 2 x 10-5Pa, and the symbol is Lp e.g. Lp = 70 dB re
2 x 10-5Pa.
Whereas the Sound Power level of a noise source is a constant, the Sound Pressure Level will be
affected by several factors relating to the physical environment surrounding the noise source, as
described below.
--------------------------------------------------
Note added at 2 час (2009-03-28 21:24:44 GMT)
--------------------------------------------------
LP=sound pressure levels (metric units)
LW=sound power levels (metric units)
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