Sib Nqus Lub Puag Ua Haujlwm yog qhia txog lub npe, ntsuas qhov taw qhia.
Oct 21, 2017| Sib Nqus Lub Puag Ua Haujlwm yog qhia txog lub npe, ntsuas qhov taw qhia.
1, sib nqus compass , kuj hu ua "magnetic compass", yog kev ntsuas kev ntsuas ntawm qhov ntsuas qhov ntsuas, siv los txiav txim siab txog kev taw qhia thiab kev tsom teeb pom kev zoo. Nws yog nyob rau hauv lub ancient Suav Secretary ntawm lub South, compass ntawm lub hauv paus ntawm kev loj hlob hnyav. Nws yog kev siv cov khoom sib nqus ntawm lub cev los ntawm geomagnetic stability ntawm sab qaum teb ntawm kev coj ntawm kev coj ua ntawm kev ntsuas ntawm qhov ntsuas.
2, hlau nplaum tshwj xeeb los ntawm ntau qhov ntawm kev sib txuam sib nqus, kev hu thiab qhov sib nqus yuam kev kho, lub nqus koob ntim rau sab nraud ntawm kev hu, sib zog nqus quab yuam hauv qhov sib nqus, kom ob qho tib si ntawm cov nqaj hlau nqaj hlau sab qaum teb thiab sab qab teb ntawm kev lag luam, lub hom phiaj. Ntau zaus siv navigation rau nkoj thiab dav hlau.
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