Xov Xwm Tuam Txhab
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Kuv yuav ua li cas thiaj paub yog tias kuv lub cev muaj zog puas tawg?
Thaum lub txim hluav taws kub hnyiab cov pa roj hauv lub cev muaj zog, qhov kev tsim pov thawj tawg muaj qhov sib txuas sab hauv los tiv thaiv kev tawg lossis hluav taws ntau dua.Lub cev muaj zog tawg tau raug cim kom meej nrog daim ntawv teev npe uas txheeb xyuas nws qhov tsim nyog rau qhov chaw muaj kev phom sij.Nyob ntawm lub hnub nyoog...Nyeem ntxiv -
Cov keeb kwm luv luv ntawm kev txhim kho lub cev muaj zog
Xyoo 1880, American inventor Edison tau tsim lub tshuab hluav taws xob loj DC hu ua "The Colossus", uas tau nthuav tawm ntawm Paris Exposition xyoo 1881. edison leej txiv ntawm cov hluav taws xob ncaj qha Tib lub sijhawm, kev txhim kho ntawm lub tshuab hluav taws xob kuj tseem ua tiav.Generator thiab lub cev muaj zog yog ob qhov sib txawv ...Nyeem ntxiv
