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paper soaked in lead(II) acetate which is used to detection of sulfur compounds
Where can I buy this lead sugar paper?
centrifugal sugar
Centrifugal sugar is a type of sugar, characterized by its sweetness.
non-centrifugal sugar
This cake is made with non-centrifugal sugar.
Alternative spelling of 平行四辺形 (“parallelogram”)
This shape is a parallelogram.
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DiQt（ディクト）
無料
★★★★★★★★★★
