康宁corning耗材 156758 NunclonTM△培养试管，聚苯乙烯（Polystyrene)培养管，聚乙烯(Polystyrene)瓶盖，已灭菌，形状，平底，瓶盖类型，螺旋纹 LSP Nunc 450 1CS