[电] 声阶

acoustical level的用法和样例:

例句

  1. In the environment with lower noise level, the earplug will decrease its sound insulation factor accordingly to ensure the useful voice can be heard.在低声级环境中,其隔音量又足够低,可以保证能接收到一些有用的声信号。

When Pablo Panda Sandoval made history with 3 home runs in game one of the world series his head was probably buzzing. But when batters in chilly Detroit had the ball not quite right in the next couple of the nets, it will be their hands that buzzing

发表于:2018-12-24 / 阅读(158) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-second Science. I'm Steve Mirsky. Got a minute? Can you name those notes? Probably not. Perhaps one in ten thousand speakers of European languages has perfect pitch - the ability to recognize a note without having hea

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This is Scientific American's 60-second Science. I'm Karen Hopkin. If you ever got picked on in the schoolyard, you might have wished for some sort of superpower, like unbeatable speed or maybe just the ability to completely disappear. Now scientists

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Scientists analyzed around 2,500 of those calls, and found that the second part (sound) is nearly identical in pitch every time from each whale: 16 hertz, or four octaves below middle C. And the slight variations in frequency that do exist are only a

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Hybrid cars are good for the environment. But scientists say that they might be bad for pedestrians. Because hybrids are so quiet, it can be hard for walkers to hear them until its too late. Listen to this. [quiet car sound] Thats a Toyota Prius mov

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If you ever got picked on in the schoolyard, you might have wished for some sort of superpower: like unbeatable speed or maybe just the ability to completely disappear. Now scientists at the College of Wooster in Ohio say that you might have had a s

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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Every year, scores of manatees are killed by boats in Floridas waters. Their plight is an ecological concern. And everyone from marine biologists to Marg

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This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. Hybrid cars are good for the environment, but scientists say that they might be bad for pedestrians. Because hybrids are so quiet that can be hard for wa

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We humans are pretty good at communicating with sounds other than words. But how much of this is hard-wired, and how much do we pick up from others? To find out, researchers recorded the nonverbal sounds of people born deaf, as they responded to a ra

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The Tiangong-2 space lab, though adopting the structure of Tiangong-1 without too many changes in appearance, has been designed to function much stronger than its predecessor. Zhu Congpeng, chief designer of the lab, says they've focused on a variety

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学英语单词
aerodynamic(al) drag
argon-arc welding
artificial menopause
auxiliary material
awaiting
babery
barrel-polishing
bawel
binary-condition
blanchewater hill
build up to leghemoglobin
cannabinomania
carl jungs
cation radical
cholecystokinase
ciliary congestion
citizen-driven model
classfellow
cockinesses
Colorado spruce
colouriser
constrained vibrations
Copoloid
corrosion cracking of steel bridge
cross coupling
defecated
Deokhel
deutzia glaberrtma koehne
dilution mechanism
dimethylcarbate
Domeboro
edutainer
effective swept volume
enamel spindle
energy flux density
enes
engine handling
Esaki
eu-level
grid-cavity tuner
hand assembler
hazardous zone 1
horse-drawn rake
immunocytochemical techinque
intelligence scale
iron-ammonia catalyst
kenn
lipodiaresis
loading-unloading-stacking equipment
Madagascarians
mass action principle
maximum return
microwave microelectronics
milk yield
moisture total
multiapproach
multiple-wave interference
music anthropology
neutron absorbing material
non-Euclidean length
nonmultimedia
NPB
numerical functional analysis
oocyte-corona-cumulus complex
oxshoe
Pabna District
paint-by-number
parent station
payroller
perdue
personal department
Peter the Great Bay
piezoelectric oscillograph
point collocation
provincial
pseudo-documentary
Quorn
raden
Rantaukampar
red coral
relandscapes
ribbon agitator
ricey
runny noses
Shrove Tuesday
shrub savanna
Sitename
squalidnesses
stylops
suturae lienalis
temporal-spatial structure
Thikozol
touches us
tpw
tribromo-hydrin
tunnel drainage facility
untimbered
utility storage
Valerianus
white camphor oil
yalowitz
yes