工程师调整了管道的角度以确保液体顺畅流动。

The engineer adjusted the ___angulation of the pipes to ensure smooth liquid flow.

外科医生仔细测量了骨折部位的成角角度。

The surgeon carefully measured the ___angulation of the broken bone.

工程师仔细调整了零件的角度，以确保机械装置平稳运行。

The engineer carefully adjusted the ___angulation of the parts to ensure smooth operation of the mechanism.