GB/T 39698-2020.Confirmation methods for delivering common Portland cement. 1范围 GB/T 39698规定了通用硅酸盐水泥...

GB/T 39564.1-2020.Multi-carrier shared distribution infrastructure for fibre to the home-Part 1 :Opt...

GB/T 39701-2020.Limit and test method of ammonium ion content in fly ash. 1范围 GB/T 39701规定了粉煤灰中铵离子含量...

GB/T 39704-2020.Determination of effective thermal conductivity for vacum insulation panels (VIP). 1...

GB/T 39712-2020.Sulphoaluminate cement for marine rapid construction. 1范围 GB/T 39712规定了快速施工用海工硫铝酸盐水泥...

GB/T 39071-2020.Brand evaluation-Guidelines for consumer perception measuring. 1范围 GB/T 39071给出了基于消费...

GB/T 39679-2020.Integrated circuit card device for lifts. 1范围 GB/T 39679规定了电梯IC卡装置的技术要求、试验方法、检验规则、标志...

GB/T 39736-2020.Technical specification for the national park master plan. 1范围 GB/T 39736规定了国家公园总体规划...

GB/T 39564.3-2020.Multi-carrier shared distribution infrastructure for fibre to the home-Part 3: Opt...

GB/T 39640-2020.Measurement methods for electromagnetic fields of household appliances and similar a...