Xov xwm kev lag luam
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Nrog koj zoo siab!Thawj qhov kev sim davhlau ntawm thawj lub dav hlau loj C919 tau ua tiav tiav.
Thaum 6:52 ntawm Lub Tsib Hlis 14, 2022, lub dav hlau C919 tus lej B-001J tau tawm ntawm 4 txoj kev khiav ntawm Shanghai Pudong tshav dav hlau thiab tsaws yam xyuam xim thaum 9:54, ua tiav qhov kev ua tiav ntawm thawj lub davhlau sim ntawm COMAC thawj C919 lub dav hlau loj. yuav tsum xa mus rau nws thawj tus neeg siv ...Nyeem ntxiv -
23rd World Metrology Day | "Metrology hauv Digital Era"
Lub Tsib Hlis 20, 2022 yog 23rd "World Metrology Day".Lub International Bureau of Weights and Measures (BIPM) thiab International Organization for Legal Metrology (OIML) tau tshaj tawm 2022 World Metrology Day ntsiab lus "Metrology hauv Digital Era".Tib neeg lees paub qhov hloov pauv ...Nyeem ntxiv
