intermediate angle

例句：

1. 1. The engineer calculated the exact middle angle of the roof to ensure it would not collapse under load.
   工程师计算了屋顶的精确中间角度，以确保在负载下不会塌陷。
2. 2. During the construction phase, the team carefully measured and marked the intermediate angles between beams.
   在施工阶段，团队仔细测量并标记了梁之间的中间角度。
3. 3. The scientist observed the intermediate angles between the two plates as they moved together and apart.
   科学家观察了两个板片在移动时相互靠近和远离时的中间角度。