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bowling pin Bowling pins are the target of the bowling ball in various bowling games including tenpins, five-pins, duckpins, and candlepins. == Ten-pin bowling pins == Pin specifications are set by the United States Bowling Congress. World Bowling, formerly World Tenpin Bowling Association has adopted the USBC specifications. Pins are 4.75 inches wide at their widest point and tall. They weigh , pins weighing up to are approved. The weight of the pins were originally based on the principle of physics, with the idea that a pin should be at around 24-percent the weight of the heaviest bowling ball within regulation of .
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「bowling pin」の詳細全文を読む
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