head and shell openings 封头及壳体开孔
Openings, head and shell, computation of.
开孔，封头和壳体，计算。
Preferably, the streamline surface of the shell is gradually shrunk from the head to the tail, and the rear openings are symmetrically distributed around the Central Line of the shell.
优选的，所述壳体的表面流线型由头部到尾部逐渐收缩，所述后开口围绕所述壳体的中心线对称分布。
Three axial grooves which are communicated with the bottom part are arranged on the probe of the surgical instrument and are arranged with openings at the head of the probe.
该手术器械的探头上有三条底部沟通的轴向槽，三条槽在探头头部开口。
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