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hole orifice
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1.
A
small
hole
orifice
or
restrictor
in a
component
for allowing
pressure
in the component to be the
same
as
ambient
pressure
.
部件
内
,
用以
使
部件
内
的
压力
与
周围
环境
压力
相同
的
小
孔
、
或
限
流
器
。
bù jiàn
nèi
,
yòng yǐ
shǐ
bù jiàn
nèi
de
yā lì
yǔ
zhōu wéi
huán jìng
yā lì
xiāng tóng
de
xiǎo
kǒng
、
huò
xiàn
liú
qì
。
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