Read-write access to different information sources - in particular when coordinating a logical unit of work - is constrained by the vendor-specific support.
不同信息源的读写访问(特别在对逻辑工作单元进行协调时)将受到供应商特定的支持的约束。
2
Processing a text file often consists of sequentially reading a unit of information (typically either a character or a line) and doing something in response to the unit you've just read.
处理文本文件通常包括读取信息单元(通常叫做字符或行)，然后对刚读取的单元执行适当操作。
3
The part of execution in which an operand or instruction is read from main storage and written into a control unit or arithmetic unit register.