Lubrication
Nuttall's Standard Dictionary of the English Language · 1890 · p. 113
lew-bre-ka -shun, s. the act of lubricating.
Bu kavram başka kaynaklarda da geçiyor
A Dictionary of Military Terms (1918)
Hawkins' Electrical Dictionary (1915)
A Dictionary of Aviation (1911)
An Illustrated Encyclopedic Medical Dictionary (1893)
Zell's Condensed Dictionary (1879)
A Dictionary of Arts, Manufactures and Mines (1840)
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