Home / Standards / GB/T 14777-1993 GB/T 14777-1993 Active Geometrical orientation and directions of movements 几何定向及运动方向 Standard Type GBT ICS 13.180 CCS A25 Status 现行 Issue Date 1993-12-24 Implementation 1994-07-01 Responsible Dept 国家标准委 Drafting Unit N/A