国产一级a毛一级a看免费视频,久久久久久国产一级AV片,免费一级做a爰片久久毛片潮,国产精品女人精品久久久天天,99久久久无码国产精品免费了

氣體名稱(chēng)

平衡氣

濃度范圍

平衡氣

濃度范圍

NH₃

H₂

50ppm-1.5%

N₂

50ppm-50%

CO₂

Air

0.1-30%；100-999ppm；1-99ppm

N₂

0.1-30%；100-999ppm；1-99ppm

H₂

0.1-30%；100-999ppm；1-99ppm

O₂

0.1-30%；100-999ppm；1-99ppm

CO

Air

0.1-6.0%；50-999ppm；1-49ppm

N₂

0.1-50%；50-999ppm；1-49ppm

H₂

0.1-50%；50-999ppm；1-49ppm

C₂H₆

Air

0.1-50%；50-999ppm；5-49ppm

N₂

0.1-50%；50-999ppm；1-49ppm

C₂H₄

Air

0.1-50%；50-999ppm；5-49ppm

N₂

0.1-4.5%；50-999ppm；5-49ppm

H₂

Ar

0.1-50%；50-999ppm；1-49ppm

N₂

0.1-50%；50-999ppm；1-49ppm

He

0.1-50%；50-999ppm

H₂S

He

0.1-3%；50-999ppm；10-49ppm

N₂

0.1-5%；50-999ppm；10-49ppm

i-C₄H₁₀

He

0.1-2%；50-999ppm；5-49ppm

N₂

0.1-2%；50-999ppm；5-49ppm

CH₄

Air

0.1-2.65%；50-999ppm；1-49ppm

H₂

0.1-50%；50-999ppm；1-49ppm

Ar

0.1-50%；50-999ppm；1-49ppm

N₂

0.1-50%；50-999ppm；1-49ppm

NO

N₂

0.1-1.0%；50-999ppm；5-49ppm

N₂

Ar

0.1-50%；50-999ppm；2-49ppm

He

0.1-50%；50-999ppm；2-49ppm

O₂

Ar

0.1-50%；100-999ppm；5-49ppm

NO₂

He

0.1-0.7%；50-999ppm；10-49ppm

N₂

0.1-0.7%；50-999ppm；10-49ppm

C₃H₈

Air

0.1-1.0%；50-999ppm；5-49ppm

N₂

0.1-3.0；50-999ppm；5-49ppm

SO₂

N₂

0.1-0.5%；50-999ppm；5-49ppm

SF₆

N₂

0.1-0.5%；50-999ppm；5-49ppm

名稱(chēng)

平衡氣

含量

變壓器油溶解氣體測(cè)定用氣

N₂或

Air

CO     300-500ppm；   CO₂    500-1000ppm

CH₄    1000ppm-1% ； C₂H₄   300-500ppm

C₂H₆   300-500ppm；   C₂H₂   300-500ppm

大氣環(huán)境監(jiān)測(cè)儀器標(biāo)定用氣

N₂

NO          90ppm

N₂

NO          900ppm

N₂

CO          2000ppm;  CO₂  500ppm;

空分產(chǎn)品測(cè)控用氣

Ar

H₂  5ppm；  CH₄  5ppm；    O₂  5ppm；  CO  5ppm

N₂  5ppm；  CO₂  5ppm

He

H₂  10ppm；  CO₂  10ppm；  O₂  10ppm；  N₂O  10ppm

N₂  10ppm；  Kr    10PPM； CH₄ 10ppm；   Xe    10ppm；     CO  10ppm

O₂

H₂  5ppm；  N₂O  300ppm；  N₂  5ppm     Kr    300ppm

CH₄  5ppm   Xe    2000ppm；CO  5ppm    CH₄   2000ppm；    Ar   5ppm

Ne

H₂  10ppm； CH₄  10ppm；   O₂  10ppm；  CO   10ppm ；      N₂  10ppm