internal core-pulling是什么意思 internal core-pulling怎么读
internal core-pulling的相关资料
internal core-pulling的用法和样例
- This structure solved the difficult problems in production by the use of two sets of different slider to accomplish the contractile interior core pulling.
该结构利用两组不同的滑块完成了收缩内抽芯，解决了生产中的难题。
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