Fundraising September 15, 2024 – October 1, 2024
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1
中华人民共和国国家标准 GB/T17181-1997 idt IEC804-4:1985 积分平均声级计=Integrating-averaging sound level meters
iec
10s
tso
1db
fea
isk
10ms
brr
l8lzl
1ms
20ppa
5db
fre
gok
z66l
10db
1s9
29c
2db
30db
4khz
abr
agh
apps
arf
arr
bef
beh
bop
brk
esl
feb
fers
fis
frr
ghg
heh
hog
ial
lms
mep
platy
punos
raf
rba
rea
rmr
rpe
rra
sbe
Language:
chinese
File:
PDF, 9.06 MB
Your tags:
0
/
0
chinese
2
中华人民共和国国家标准 GB/T 16402-1996 eqv ISO 389-2:1994(E) 声学 插入式耳机纯音基准等效阈声压级=ACOUSTICS-REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND INSERT EARPHONES
osi
reference
insert
earphones
iec
calibration
levels
acoustics
equivalent
gsh
simulator
threshold
966l
a9d
amer
eqv
esr
heal
retspl
rra
tce
tones
whe
wilber
xie
zero
封
1sz
20ppa
28s
_1gtrev
aah
aapl
acoust
acustica
adf
aipmerr
aix
amhr
arash
arb
arlinger
arprhen
arr
artificial
asb
ash
audiol
audiome
audiometers
Language:
chinese
File:
PDF, 6.26 MB
Your tags:
0
/
0
chinese
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