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1,3-Dimethylurea, 1,3-二甲基脲/500g/CAS:96-31-1
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BG-P316350(玻璃棒/实心/直径6mm/长度350mm)
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BH-10260-06(透明塑料真空管/内径6mm/米)
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BG-D681922(三通蒸馏接收管/磨口19/22)
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BG-A282919(防溅球/上磨口29/42/下磨口19/22/容量100mL)
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