The first Flyball tournament was held in 1983 in the USA.
第一届飞球比赛于1983年举办于美国。
Flyball is one of the non-hunting dog sports in which dogs and people work as a team .
飞球比赛是非猎犬运动类比赛形式中由犬只和人类共同合作的比赛项目之一。
James Watt's flyball governor (1769) regulated steam flow to a steam engine to maintain constant engine speed despite a changing load.
1769年瓦特的飞球调速器，它是一种调节蒸汽流的装置，即使荷载变化仍可保持蒸汽机的转速不变。 收藏。
James Watt's flyball governor (1769) regulated steam flow to a steam engine to maintain constant engine speed despite a changing load.
1769年瓦特的飞球调速器，它是一种调节蒸汽流的装置，即使荷载变化仍可保持蒸汽机的转速不变。 收藏。
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