/-{-{shíyīngzhōng}-}-/, /sɛːk̚² jɪŋ⁵⁵ t͡sʊŋ⁵⁵/, /sek6 jing1 zung1/, /sek9 jing1 dzung1/, /shyringjong/, /shíhyingjhong/, /ség6 ying1 zung1/、/ㄕˊ ㄧㄥ ㄓㄨㄥ/
基於放置在電子振盪器中石英晶體電壓特性的精確時鐘