This cable has the straight section at one side and the variable-length spiral section at the other side, with a SC connector at both ends.
该电缆具有直线节在一边和可变长螺旋部分在另一边，用一个SC连接器的两端。
This information belongs as a necessary constituent to the "section method" of the spiral system.
这信息作为“螺旋式”体系的“占区方式”的必要组成部分。
Takes the screw type compressor rotor as an example, a calculating method of unknown section profile of spiral surface and its conjugate shape is introduced and practical formulas are given.
以螺杆压缩机转子为例，介绍了未知螺旋面端截面轮廓及其啮合的共轭齿形求法，给出了实用计算公式。
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