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Water cannon : ウィキペディア英語版 | Water cannon
A water cannon is a device that shoots a high-velocity stream of water. Typically, a water cannon can deliver a large volume of water, often over dozens of meters. They are used in firefighting, large vehicle washing and riot control. Most water cannons fall under the category of a fire monitor. ==Firefighting== (詳細はfireboats. Extinguishing fires on boats and buildings near the water was much more difficult and dangerous before fireboats were invented. The first fireboat deployed in Los Angeles was commissioned on 1 August 1919. The first fireboat in New York City was ''Marine 1'', deployed 1 February 1891. There may have been other fireboats elsewhere even earlier. Fire trucks deliver water with much the same force and volume of force as water cannons, and have even been used in riot control situations, but are rarely referred to as water cannons outside this context.
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「Water cannon」の詳細全文を読む
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