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Thông dụng
Kỹ thuật chung
Oxford
N. & v.
Hist. a =battering ram (see BATTER(1)). b a beak projecting from the bowof a battleship, for piercing the sides of other ships. c abattleship with such a beak.
A a hydraulic water-raising or liftingmachine. b the piston of a hydrostatic press. c the plunger ofa force-pump.
Rammer n. [OE ram(m), perh. rel. toON rammr strong]
tác giả
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