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GB/T 13747.12-2019
锆及锆合金化学分析方法 第12部分:硅量的测定 钼蓝分光光度法
Methods for chemical analysis of zirconium and zirconium alloys—Part 12:Determination of silicon content—Molybdenum blue spectrophotometry
GB/T 38386-2019
Gas analysis—Determination of oxynitride in gases—The method of Cavity Ring-Down Spectroscopy
GB/T 25430-2019
Petroleum drilling and production equipment—Rotating control devices
GB/T 13747.7-2019
锆及锆合金化学分析方法 第7部分:锰量的测定 高碘酸钾分光光度法和电感耦合等离子体原子发射光谱法
Methods for chemical analysis of zirconium and zirconium alloys—Part 7:Determination of manganese content—Patassium periodate spectrometry and inductively coupled plasma atomic emission spectrometry
GB/T 38265.10-2019
Test methods for soft soldering fluxes—Part 10:Flux efficacy test—Solder spread method
GB/T 38368-2019
Geometrical product specifications (GPS)—Requirements of digital model-based measurement
GB/T 38364.2-2019
园林机械 以内燃机为动力的草坪修剪机安全要求 第2部分:步进式草坪修剪机
Garden equipment—Safety requirements for combustion-engine-powered lawnmowers—Part 2:Pedestrian-controlled lawnmowers
GB/T 38364.3-2019
园林机械 以内燃机为动力的草坪修剪机安全要求 第3部分:坐骑式草坪修剪机
Garden equipment—Safety requirements for combustion-engine-powered lawnmowers—Part 3: Ride-on lawnmowers with seated operator
GB/T 39641-2020
Methods for gaging fastening screw threads by thread indicating gages