绕组线的封装。第3部分：锥形筒式输出线轴。第3节：由热塑性材料制成的不能回收使用的绕线轴规范。
Packaging of winding wires. Part 3: taper barrelled delivery spools. Section 3: specification for non - returnable spools made from thermoplastic material.
正如你所看到的，一些试验做的目的是“涡流感应系统”，另一个锥形前与后方面临的摄入管节。
As you can see, some experimentation was done with a "swirl-induction" system and another conical front-section with rearward facing intake tubes.
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