Xov xwm kev lag luam

Nrog rau kev txhim kho thiab kev vam meej ntawm lub sijhawm, tib neeg lub neej tau yooj yim dua. Cov khoom siv hlau nplaum tas mus li yog qhov tseem ceeb hauv ntau yam khoom uas muab kev yooj yim rau tib neeg. Lawv ua lub luag haujlwm tseem ceeb hauv lawv. Cov hauv qab no yog cov khoom lag luam uas tuaj yeem pom txhua qhov chaw hauv peb niaj hnub ...Nyeem ntxiv»

Kev Taw Qhia rau Cov Khoom Siv Sib Nqus Cov Khoom Siv Sib Nqus Cov khoom siv sib nqus, tshwj xeeb tshaj yog cov khoom siv hlau nplaum ruaj khov xws li neodymium hlau boron (NdFeB) thiab samarium cobalt (SmCo), tau siv dav hauv kev lag luam niaj hnub vim lawv lub zog sib nqus hlau nplaum thiab kev ua haujlwm zoo heev. Los ntawm motors ...Nyeem ntxiv»

Nyob rau niaj hnub no txoj kev loj hlob sai, cov hlau nplaum ruaj khov ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw, xws li lub cev muaj zog, khoom siv hluav taws xob, khoom siv kho mob, thiab lwm yam. . muab prof...Nyeem ntxiv»