pitching seam 中文意思是什麼
pitching seam
解釋
陡傾礦層-
Quadratic function analysis of greatest subsidence angle during mining pitching or steerly pitching coal seam
大傾角煤層開采最大下沉角的二次插值分析 -
I ' d never thrown a two - seam sinker until two years ago in the minors, when the pitching coaches told me to try it. before, i used four - seam fastballs and sliders
我從未投過二縫線伸卡球,直到兩年前,在小聯盟時,投手教練教我練習,之前我主要投四縫線速球和滑球。
分享友人