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实验室离心机基本参数与型号编制方法
Basic parameter of laboratory centrifuge and method of type designations
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电子天平产品型号编制方法
Method of designations of electronic balance products
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天平非金属支承件
Nonmetal supports for lever balance
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杆杠式天平刀子、刀承
Knife-edge and edge bearing for lever balance
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远红外线干燥箱
Far infra-red drying cabinet
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