采购：包装材料，什锦水果罐头，菠萝罐头，果汁饮料，浓缩果汁，乳制品。
Buy: package, canned fruit cocktail, canned pineapple, juice drink, juice concentrate, dairy product.
以新鲜绿豆芽下胚轴为材料，研究了绿豆芽罐头加工中的烫漂护色工艺。
Color retention technology of canned mungbean sprouts was studied in this text.
本文从力学、材料学、成形理论多方面论述了金属罐头的封口原理与方法。
In this paper, the principles and ways are expounded on sealing metal cans with reference to dynamics material study and shaping theory.
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