spindle angle的用法和樣例：
例句
- The biggest problem is calculating the seabed slope angle of the unknown seabed.
而對未知海底的傾斜角求解問題是解決波束角效應的難點之一。 - A surveying instrument consisting of a spirit level and a sighting tube,used to measure the angle of inclination of a line from the observer to the target.
由一個水平儀和一個觀測管組成的測量工具，用來測量從觀測者到目標的直線的傾斜角。
