BIT - short for binary digit, which, in a computer, is the smallest unit of storage.
位数—二进制数字的缩写，电脑中最小的储存单位。
2
The whole digit-controlled lathe of lower prices generally choose stepping drive unit price is higher, and the machine tool selection servo drive unit.
整台数控机床价格较低的一般选择步进驱动单元，而价格较高的机床选择伺服驱动单元。
3
All dimensions specified are approximations only. Unless stated otherwise, the least significant digit is uncertain by plus or minus one unit.