南宋龙泉青瓷，制胎时故意在某些地方作条状突起，使该处的釉比器身其他地方要薄，烧成后釉色显得浅淡，称“出筋”，这种工艺常见于南宋龙泉窑青瓷器上。
经过CAE拉伸软件的模拟分析，对于拉伸不足的区域采用增加拉伸筋的方式，通过试模最终加工出合格的零件。
By the simulating analysis to CAE drawing software, adding draw bead restraining mold is applied on the area of deficient stretching, the eligible products are produced finally by die testing.
经过CAE拉深软件的模拟分析，对于拉深不足的区域采用增加拉深筋的方式，通过试模最终加工出合格的零件。
Through simulated analysis of CAE simulation software, It applies drawing ribs to insufficiently drawing area. It produces qualified parts through testing die.
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