1. Kev txiav txim siab ntawm qhov sib txawv ntawm qhov sib txawv, qhov loj me thiab kev daws teeb meem Dot pitch, qhov loj thiab kev daws teeb meem yog ob peb yam tseem ceeb thaum tib neeg yuav me me-pitch LED zaub. Hauv kev siv tswv yim, nws tsis yog qhov me me ntawm qhov dot pitch thiab qhov siab dua qhov kev daws teeb meem, qhov zoo dua qhov tseeb app ...
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