_:ne8c94dd511c648b6b732d76bf88f2c73xb1
<http://schema.org/url>
"https://congthucvatly.com"
<https://congthucvatly.com/cong-thuc-vat-ly-co-bien-so-do-bien-thien-thoi-gian-vat-ly-10-18_bien-so-do-doi-vat-chat-diem-trong-dao-dong-dieu-hoa-239>