论述了发动机轴承衬套油线拉制工具的设计及其结构，介绍了油线拉制的方法，并提出了有关注意事项。
The design and structure of the drawing tool for the engine bearing sleeve inside channel is discussed, the drawing technique introduced and the related points put forward.
论述了发动机轴承衬套油线拉制工具的设计及其结构，介绍了油线拉制的方法，并提出了有关注意事项。
The design and structure of the drawing tool for the engine bearing sleeve inside channel is discussed, the drawing technique introduced and the related points put forward.
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