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Sports
Of or pertaining to any organized, competitive, entertaining, and skillful activity or game requiring commitment, strategy, and fair play, in which a winner can be defined by objective means within a specified set of rules.
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頻率
Agriculture; Animal feed
1.的每秒的交變電流週期數 (示例: 60 週期每秒或每秒 60 赫茲)。 2.操作發生的時間單位的次數。頻率是所有聲音的基礎。 A 泵或電機的基本頻率等於它的速度在每秒抽分庭的數量乘以革命。 ...