體育專業(yè)外文翻譯3-其他專業(yè)(已改無錯字)
2023-03-03 07:24:24 本頁面
【正文】 e. Country market mainstream tennis ball machine brand TENNIS TUTOR and LOBSTER, through the21you can see them in front of a ball outlet, through a ball outlet can see two wheels, the two driven by a motor wheel through rapid rotation ball extrusion injection. The difference is, some tennis serving machine TUTORPROLITE series, which is characterized by extremely portable. On the side with TENNIS TUTOR and LOBSTERELITE series, the benefits are ball is through the upper and lower two wheels of different rotation speeds can be produced when the ball out can be adjusted topspin or backspin. The general principle: tennis tennis ball launcher by motor driven ball disc into the ball, after the ball channel reaches the two squeeze ball wheel, after squeeze ball wheel friction will not speed regulating motor through a tennis, crank and rocker mechanism drives the swing shaft bracket, motor speed, extrusion, ball wheel in lead vertical plane of swing. Tee box seat is provided with no speed regulating motor, a crank rocker mechanism, a swing shaft, a walking wheel box, not speed regulating motor through the crank rocker mechanism drives th
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