[閒聊] 尾勁好或不好的四縫線速球軌跡差異?已回收
先不管其他速球系球種,
只考慮最基本的四縫線速球。
"尾勁好"、"球會跑" 究竟要如何精確描述?
假設出手時的初速相同,
相較"尾勁普通"、"球不會跑"的速球,
兩者在軌跡上有何不同?
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