给出了初步的试验结果，包括加工的直槽、圆、薄壁和人脸，以及槽底的表面粗糙度。
Preparatory test results of the test-bed are presented, which include machined straight slots, circles, thin walls and human faces, and measured surface roughness at the bottom of the slot.
立柱的外圆上设有一导 向长槽，在导向长槽的槽底加工有二个分别设置的小凹槽。
The outer circle of the vertical pole is provided with a guiding elongated slot, and the slot base of the guiding elongated slot is processed with two small grooves which are respectively arranged.
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.
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