德国KSL试验粉尘系列介绍： Annex 4, Point 2.1.1 Annex 4, Point 2.1.2 Cement for Building technology / structural engineering Is an inorganic finely ground, hydraulically acting binder for mortar and concrete, ...

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This International Standard applies to degrees of protection (IP code) provided by enclosures of the electrical equipment of road vehicles. It specifies the following: a) Designations and definitions ...

英国Particle Technology的测试粉尘在全使用，应用在汽车、航空航天、过滤和机械行业。 The Test Dust production department within Particle Technology has considerable experience in manufacturing material to meet UK, EU, US, Japanese and ...