对汽车板激光拼接工艺进行大量试验。
A lot of experiments have been carried out for laser butt welding of steel sheet.
大型法兰的生产工艺有锻造及卷制和拼接三种。
The production technology of large flange has three kinds of forging and rolling and splicing.
产品尺寸过大只能是用卷制及拼接的工艺。
Product size is too large can only be used in the process of rolling and splicing.
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