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标准化工作是国民经济和社会发展中重要的技术性基础工作。对于工程机械行业来说,由于其产品多样性和使用的广泛性,以及其在使用中涉及大量的环境和安全问题,在行业高速发
Standardization is an important technical foundation for national economic and social development. For the construction machinery industry, due to the diversity of its products and the use of extensive, as well as its use involves a large number of environmental and safety issues in the industry of high-speed hair