フォーシームのスピン量とその効果/the-effect-of-fourseam-fastball-spin-rate

by Taketo Yoshida

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ؿؓ٦ء٦يךأؾٝꆀה׉ך⸬卓 5BLFUP:PTIJEB #BTFCBMM1MBZ4UVEZ/1#Ꟛ䍊湫⵸ألءٍٕ #14UVEZ

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5BLFUP:PTIJEB!UBNBOZBO J04%FWFMPQFS!/JLLFJ 状❁源⳿魦ך䊬➂ؿ؋ٝ 蝀ꅿծし歊姻㼿ךؿ؋ٝ ➙䎃飾㾙椔㔚ח劍䖉ׅ׷ֿה 蝀ꅿך⹧׍僤׾佸䴂ָضحأ׃זְֿה

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IUUQUBNBPCKFDUIBUFOBCMPHDPNFOUSZ 铣㡰䊬➂鮩ך㖩劤⹃➂כז׈⢘媷ָ㼰זְךַ

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׫זׁ׿8#$鋅ת׃׋ַ

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չ蝀ꅿָ.-#أة٦ה床׶さִ׷ֿה׾鋅ׇ׋պ הְֲ鎸✲ָꬊ䌢ח莆㄂帾ְ

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鎸✲ךתה׭ 蝀ꅿךش؎أؾحثכ♧崧ךأؾٝח饯㔓׃גְ׷ 4UBUDBTUח״׷ה⚕倯䎃ך.-#חؙٓٝ؎ׅٝ׷ ؿؓ٦ء٦يך䎂㖱㔐鯄侧כتٕؽحءُ剣ח⡂גְ׷ $VSWF SQN ה'PVSTFBN SQN ך䎂㖱㔐鯄侧כ稆兦׵׃ְ

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4UBUDBTU 넝鍑⫷䏝ًؕٓהٖ٦ت٦דⰋ鼅䩛הن٦ٕך⹛ֹ׾鷄騊׃ծ　꧊ر٦ة ׾ּׅחⵃ欽ׅ׷ֿהָדֹ׷فٓحزؿؓ٦ي

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鵚䎃.-#דכأؾٝꆀָ岣湡ׁ׸גְ׷

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넝أؾٝꆀך⸬卓瑞䮶׶ך然桦ָ넝ֻז׷ ؿٓ؎ن٦ٕחז׶װְׅ굲绤ٔأؙ넝׃ 䧭戭הַ˘䧭戭הַ˘䧭戭הַ˘

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#BTFCBMM4BWBOU׾ؙٗ٦ٕ׃4UBUDBTUךر٦ة׾　꧊ ˟GPVSTFBNGBTUCBMM׾㼎韋ח椔⟃♳䫎־׋䫎䩛ך׫ךر٦ة׾　꧊

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ر٦ةך㘗椔珏椔鸞 ؾحثٍ٦せ غحة٦せ أؾٝꆀ 䩧椔錬䏝椔鸞 أزٓ؎ؙب٦ٝ ؕؐٝز ؎صؚٝ 䫎椔穠卓鑐さ傈儗 

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QBOEBTדر٦ة׾꧊鎘

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'PVSTFBNךأؾٝꆀךؼأزؚٓي

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'PVSTFBNךأؾٝꆀךؼأزؚٓي 蝀ꅿכֿך鴟

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'PVSTFBNךأؾٝꆀךؼأزؚٓي 谏䊛椔⯢ֿך鴟

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'PVSTFBNךأؾٝꆀה瑞䮶׶桦

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瑞䮶׶桦הך湱ꟼ⤘侧 أؾٝꆀ 鸞䏝

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鸞ׁהأؾٝꆀה瑞䮶׶桦ךؼ٦زوحف

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剑䖓ח أؾٝꆀָ㢳ְה瑞䮶׶桦ָ《׶װְׅ 'MZ#BMM1JUDIFSחז׶װְׅךדծ굲绤ٔأؙ֮׶ 4UBUDBTUׅ־ִծ傈劤ח㼪Ⰵח׃גؔ٦فٝر٦ة⻉כ״

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