组分试验 meaning in Chinese

constituent test

Copper coated steel wire . test method for weight of copper coating and composition
镀铜钢丝镀层重量及其组分试验方法
Products and systems for the protection and repair of concrete structures - granulometry analysis - part 1 : test method for dry components of premixed mortar
混凝土结构的防护和维修用产品和系统.粒度分析.第1部分:预混合泥浆干组分试验方法