Tsev / Kev paub

Kev paub

19

Dec, 2022

Kev daws teeb meem ntawm kev kho mob oxygen cylinders

Kev daws teeb meem ntawm kev kho mob oxygen cylinders
18

Dec, 2022

Koj paub ntau npaum li cas txog qhov hluav taws kub ntawm cov pa oxygen?

Koj paub ntau npaum li cas txog qhov hluav taws kub ntawm cov pa oxygen?
17

Dec, 2022

Txheeb xyuas hom kev thauj tshwj xeeb ntawm oxygen

Txheeb xyuas hom kev thauj tshwj xeeb ntawm oxygen
16

Dec, 2022

Cov txiaj ntsig ntawm kev siv kua oxygen hauv kev lag luam roj

Cov txiaj ntsig ntawm kev siv kua oxygen hauv kev lag luam roj
15

Dec, 2022

Taw qhia txog kev npaj cov pa oxygen

Taw qhia txog kev npaj cov pa oxygen
14

Dec, 2022

Dab tsi yog lub luag haujlwm ntawm nitrogen ua hauv tsheb log tsheb?

Dab tsi yog lub luag haujlwm ntawm nitrogen ua hauv tsheb log tsheb?
13

Dec, 2022

Taw qhia rau txoj kev npaj ntawm nitrogen

Taw qhia rau txoj kev npaj ntawm nitrogen
12

Dec, 2022

Kev nkag siab zoo txog kev kho mob oxygen

Txhua tus neeg yuav tsum tau hnov txog kev nqus pa oxygen rau kev kho mob, uas yog tswj cov concentration ntawm oxygen inhalation ntawm 0 thiab 1.5 ib feeb los ntawm kev nqus pa oxygen, thiab qhov
11

Dec, 2022

Taw qhia rau txoj kev tshuaj xyuas ntawm nitrogen purity

Taw qhia rau txoj kev tshuaj xyuas ntawm nitrogen purity
10

Dec, 2022

Cov txheej txheem yooj yim ntawm kev sim thiab kev npaj ua lag luam ntawm oxygen

Cov txheej txheem yooj yim ntawm kev sim thiab kev npaj ua lag luam ntawm oxygen
09

Dec, 2022

Tshawb xyuas seb qhov nqus pa oxygen puas yog nyob ntawm

Tshawb xyuas seb qhov nqus pa oxygen puas yog nyob ntawm
08

Dec, 2022

Kev cuam tshuam ntawm kev ua haujlwm hauv qhov chaw kaw nrog oxygen tsis txaus

Kev cuam tshuam ntawm kev ua haujlwm hauv qhov chaw kaw nrog oxygen tsis txaus

Tsev 1 2 3 456 Rau sab kawg 5/6