floating neutral

• 浮动中线,不接地中性线,浮置中线,浮接中心线

floating neutral的用法和样例：

例句

1. When the lens is in its neutral position, the centerline of the lens intersects the image just above its geometric center.
   当镜头是在中立的立场，中线镜头相交的形象略高于其几何中心。