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Words near each other
・ Plug load
・ Plug Me In
・ Plug Me In (album)
・ Plug nozzle
・ Plug Plug
・ Plug Power
・ Plug Research
・ Plug RTL
・ Plug Tunin'
・ Plug Uglies
・ Plug valve
・ Plug'n'play (band)
・ Plug-in
・ Plug-in (computing)
・ Plug-in (Escape Velocity)
Plowshare
・ Plowshares Movement
・ Plowshares Project
・ Plowville, Pennsylvania
・ Ploy
・ Ploy (board game)
・ Ployart-et-Vaurseine
・ Ploye
・ Ployer
・ Ployer Peter Hill
・ Ploypailin Jensen
・ Plozévet
・ Ploéven
・ Ploërdut
・ Ploërmel


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Plowshare : ウィキペディア英語版
Plowshare

In agriculture, a plowshare (US; ) or ploughshare (UK; ) is a component of a plow (or plough). It is the cutting or leading edge of a moldboard which closely follows the coulter (one or more ground-breaking spikes) when plowing.
The plowshare itself is often a hardened blade dressed into an integral moldboard (by the blacksmith) so making a unified combination of plowshare and moldboard, the whole being responsible for entering the cleft in the earth (made by the coulter's first cutting-through) and turning the earth over.
In well-tilled terrain the plowshare may do duty without a preceding coulter.
In modern plows both coulter and plowshare are detachable for easy replacement when worn or broken.
== Plowshares in heraldry ==
Plowshares are often used in heraldry.

File:Coa_de-by-erding.svg|Arms of Erding
File:Wappen Tunau.png|Arms of Tunau
File:Wappen Leuna.svg|Arms of Leuna
File:Wappen erlbach.png|Arms of Erlbach
File:Wappen Neuler.svg|Arms of Neuler


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Plowshare」の詳細全文を読む



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