Home / Standards / GB/T 37406-2019 GB/T 37406-2019 Active Detection method of degree of sphericity of spherical silica for electronic packaging—Particle dynamic photoelectric projection method 电子封装用球形二氧化硅微粉球形度的检测方法 颗粒动态光电投影法 Standard Type GBT ICS 31.030 CCS L90 Status 现行 Issue Date 2019-05-10 Implementation 2019-12-01 Responsible Dept 国家标准委 Drafting Unit N/A