An exact shell clack sheet's geometric size calculation is the most important link n he design of manufacturing a spherical vessel.
精确的球壳瓣片的下料尺寸计算，是设计制造球罐的重要一环。
An exact shell clack sheet's geometric size calculation is the most important link n he design of manufacturing a spherical vessel.
精确的球壳瓣片的下料尺寸计算，是设计制造球罐的重要一环。
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