Represents an expression used as a method invoke parameter along with a reference direction indicator 表示用作方法调用参数及引用方向指示器的表达式。
The shaft also shall have a directional indicator on top to indicate disc position when the handle is removed 阀杆也应该在顶部配置方向指示器,用于当手柄拆卸下来时指示阀瓣的位置。
This direction indicator can show golfers with ball ' s direction directly , so as to help golfers improve the hitting accuracy , and let golfers hit the ball to the target area effectively 这一款挥杆方向指示器,可以直观提示练习者挥杆击球时球将运行的方向,从而更有效帮助球手在练习中挥杆击球的准确性,使练习者更有效准确地将球击往目标区域。