Khác biệt giữa các bản “Thomas Savery”

n
fixed ref
n (→‎Chú thích: replaced: <references /> → {{tham khảo}} using AWB)
n (fixed ref)
 
== Liên kết ngoài ==
* [http://web.archive.org/web/20070814061819/http://www.mgsteam.btinternet.co.uk/engdev.htm Diagram of Savery's pump]
 
== Chú thích ==