该设备适用于做特斯林餐垫的分条，分条宽度可以自由调节。
The machine is used to slit the Textiline material lacemat, and its slitting width can be adjusted freely.
你想存取字符串的一部分。何如，你读取了一条固定宽度的记录，然后从中提取出其中的字段。
You want to access portions of a string. For example, you've read a fixed-width record and want to extract the record's fields.
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