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Ethyl trans-2-butenoate, 反式-2-丁烯酸乙酯/100g/CAS:623-70-1
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BH-310064M(塑料接头/鲁尔接头/内螺纹/6.4)
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DZ-BST-三孔盖-1/8(螺旋盖/GL45/3孔1/8)
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BG-V120500(磨口冷阱/大容量阱体500mL/杜瓦瓶1900mL)
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BG-C393240C(具砂板储存球闪式层析柱/容量500mL/外径32mm/内径26mm/磨口24/40/长457mm/G2)
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BT-12904-N4-10(铜宝塔转换头/内丝/4分-10)
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