Once the rotors are fitted, they'll cut through the material, creating a channel that reduces the clearance between the propeller top and duct wall.
一旦转子安装，他们会通过减少材料，创建了一个通道，降低了螺旋桨的顶部和管壁之间的间隙。
2
To ensure the safety of navigation and bridge, it should be considered to calculate the minimum navigable clearance dimensions of bridge in bridge construction and channel construction.
合理地确定通航桥梁的最小净空宽度，保证船队航行和桥梁安全，是桥梁建设和航道建设均应重视的问题。
3
This allows the slider (4) to better utilize the clearance height of the slider channel (5).