spiral marking的用法和樣例：
例句
- Something,such as the thread of a screw or the spiral condenser in a still,that resembles a worm in form or appearance.
有螺紋狀的物品某物，如螺旋線或蒸餾器的螺旋冷凝器，在構成或外表上像蠕蟲。 - The continuous spiral thread upon the deformed reinforcing bar is formed by eliminating portions of longitudinal ribs that are formed upon the reinforcing bar during manufacturing.
在該異形加強筋上的連續的螺旋形螺紋是通過去除在製造過程中在該加強筋上形成的部分縱向肋而形成的。
