精品人妻无码一区二区三区换脸,中国极品少妇xxxxx,妺妺窝人体色www在线,爆乳护士一区二区三区在线播放

組分名稱(chēng)

濃度范圍

平衡氣

CH4

0.5-3.0% (10%LEL-60%LEL)

Air

C3H8

0.22-1.32% (10%LEL-60%LEL)

Air

C2H4

0.27-1.62% (10%LEL-60%LEL)

Air

i-C4H10

0.19-1.14% (10%LEL-60%LEL)

Air

H2

0.2-2.4% (10%LEL-60%LEL)

Air

CO

100-500ppm

Air

H2S

10-1000ppm

N2