M46****537 2021-06-20 09:37 开发者_JS百科笋干做法大全。市面上的笋干都是以笋为原料，去掉壳后通过蒸煮、烘干等工艺制成。由于笋干色泽金黄，呈半透明状，泡好的笋干肉厚脆嫩，也被人们称为玉兰片，是福建特
I want to know when we need to use the abstract factory pattern. Here is an example,I want to know if it is necessary.
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