Xov xwm kev lag luam
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Kev vam meej iav Fiber kev lag luam
2022-06-30 12:37 qhov chaw: xov xwm tshaj tawm, nce tus lej, PAIKE Raws li peb txhua tus paub, cov ntaub ntawv tshiab tau raug teev tseg raws li ib qho ntawm cov lus qhia tseem ceeb ntawm "ua hauv Suav teb 2025" txoj kev npaj.Raws li ib qho tseem ceeb sub teb, iav fiber ntau yog nthuav dav.Cov iav fiber ntau tau yug hauv xyoo 1930s.Nws yog ib qho ...Nyeem ntxiv -
Qhov zoo ntawm iav fiber ntau
Cov iav fiber ntau yog ib yam ntawm cov khoom siv tsis zoo uas tsis yog xim hlau nrog kev ua haujlwm zoo.Nws muaj ntau yam.Nws qhov zoo yog rwb thaiv tsev zoo, muaj zog tiv thaiv tshav kub, zoo corrosion kuj thiab siab mechanical zog, tab sis nws qhov tsis zoo yog brittleness thiab hnav tsis zoo.Nws yog vwm...Nyeem ntxiv -
Cov khoom tsim tawm ntawm cov iav fiber ntau cov xov paj tswj kev loj hlob nruab nrab, thiab tag nrho kev lag luam kev loj hlob ntawm kev lag luam tsis muaj zog
Txij lub Ib Hlis mus txog rau lub Tsib Hlis 2022, cov khoom tsim tawm ntawm cov iav fiber ntau hauv Suav teb (mainland, tib yam hauv qab no) tau nce 11.2% xyoo-rau-xyoo, ntawm cov khoom tsim tawm hauv lub Tsib Hlis tau nce 6.8% xyoo-rau-xyoo, tswj kev lag luam. kuj nruab nrab txoj kev loj hlob.Tsis tas li ntawd, cov khoom tsim tawm ntawm iav fiber ntau rei ...Nyeem ntxiv