pitch-control box 螺距控制机械箱 ; 螺距控制箱
controllable pitch propeller control box 可调螺距螺旋桨控制箱
·2,447,543篇论文数据，部分数据来源于NoteExpress
Hitters stepping out of the box between every pitch, pitchers taking too much time, and control freak managers blowing through four or five relievers during the last three innings.
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