Interchangeable Perforated Tape Standards Variable Block Format for Positioning and Straight Cut Numerically Controlled Equipment
可互换穿孔带标准用于定位和直切数控设备的可变块格式

1974-08-30

Interchangeable Digital Magnetic Tape' Standards, Variable Block, Word Address Format, Contouring and Contouring/Positioning Equipment
可互换数字磁带标准、可变块、字地址格式、轮廓和轮廓/定位设备

1974-10-31