fixed contact point

基本解释

Remember, if the racquet face is closed at the low point of the backswing, it should be vertical at contact, provided you swing from the shoulder with a fixed forearm and wrist.
記得，如果網拍麪在背後拉拍的低點是關閉的，它在接觸點應該是垂直的，假設你是固定前臂和手腕地從肩膀揮拍。
The switch is directly fixed on the trigger while the inside of the holding portion of the hand lever has a trigger rib which is relatively arranged to a contact point on the switch.
所述開關直接固定在扳機上，同時所述手柄握持部位內設有同該開關上的觸點相對的觸發筋。
ip.com