• Kev kuaj thiab tso saib qhov hluav taws xob tso zis, tam sim no tso zis, zaus tso zis,
theem tim tswv, kub ua haujlwm,
lub sijhawm khiav, thiab ceeb toom txog qhov yuam kev.
• Tshawb nrhiav qhov taw tes resonant thaum pib.
• Lub sijhawm teb sai rau kev xaiv qhov voltage thiab zaus.