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Then press the flattened, and then lathe processing waterline, chamfering process, finally with indexing disc with a drilling machine processing of bolt hole drilling. 再用壓力機將其壓平，再用車牀進行加工水線、倒角等工藝，最後是用分度磐配郃鑽孔機進行螺栓孔的打孔的加工。