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Ǹ ɹڼ, ȣ, ߰, 鿪 ü踦 ȭϸ, Ϲ Ʈ ü ҽŰ ̿ ϴ ȴ
Ÿ δ hacking, cupping, slapping, beating ִ
ȸ
̷ Ϳ ִٸ ġμ غ
ȫ ̰ ȿ Ʈ ϴµ ֽϴ.
õ忡 ڽ ְ, Ĺ Ҿ û ̴µ, dz ϰ ϱ ؼ ̷ ϴ ̳^^
ǰ ϰ ϴ
ϰ ¿ ȸϱ⸦ ϴ , Ʈ̳ʴ Ƽ ̴
ӵ ߰, 츮 ڽ , ã Դϴ
ٵũ ǽ̰ ȣ Ʒϰ ε巴 ϰ( ü ٸ κп ̳ ȿ) α Ű( ȭ ) մϴ.
ִٴ Ȯϴ ð ִ
ε巯 ϸ鼭 Ǻθ ڱϰ 쿩ϴ.
Ŀ ߵɼ ִ ̶ Ǿϴ
հ Ʒ ϰ ȶ μ
Ȱ ɷ , , ȭ ̳ ϰ ȸ ٴ Դ
Ǻθ Ͽ ִ ֽϴ.
100 Ѱ 索 Ǿ ν ȸŰ ̴ ش
(Ư:,һ, Ͽ Ư ̳ ܰ ڱ Ǯ־ 縦 Ͽ ġִ η ڿġ)
Kellogg friction̶ Grosvenor 1 ۰ Ϻο 37
, 㸮 ϴ ݽſ 忡 δ ʰ
㸮 㸮 ȭٱ?
Ǹ ߵ , ȭϰ λ ϸ ۵ Ӵϴ.
2: ð Ǹ : ڸ ȭ İ ġ
ոͳı δ Ƿ Ǿ Ӹ ƴ϶ , Ҿ, ٰ ߴ
, 츮 ɸ ȭ Ʈ ؿ ü ǰ ¸ ߴٰ ֽϴ
"츮 غа , ̿ ſ Ͽ ȳϱ ֽϴ, " ߴ
ȯ ϰ ̿ϽŴν, װ ü ҿ ߿ ϴ ´
Ƿο Ÿ Ƿθ
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