A sea current meter protective cap is characterized by being a drum-shaped cap, a cap wall is provided with two grooves, and the cap bottom is provided with two cone-shaped posts.
一种海流计保护帽，其特征是一圆桶形的帽，帽壁上开有两个槽，帽底有两根锥形的柱。
A sea current meter protective cap is characterized by being a drum-shaped cap, a cap wall is provided with two grooves, and the cap bottom is provided with two cone-shaped posts.
一种海流计保护帽，其特征是一圆桶形的帽，帽壁上开有两个槽，帽底有两根锥形的柱。
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