Even when firms agree on a common standard before going to market, negotiations can be difficult.

即使各个公司在上市之前支持共同的标准，协商也是很困难的。

The implementation of a iSCSI SAN is relatively simple and cheap because it is based on common standard components.

iSCSI SAN 的实现比较简单且便宜，因为它基于常用的标准组件。

Often, different vendors of the same part may provide additional commands beyond the requirements of a common standard.

通常，同样的硬件如果由不同的硬件厂商实现，它们通常会在标准的命令集外提供一些扩展，使用这些扩展通常可以发挥这些硬件的特性。

This takes the most common standard date formats: ISO dates (including year), just a time of day, or an offset in minutes.

这里采用了最常用的标准日期格式：ISO日期(包括年)，仅仅是一天的某个时间或以分钟计算的时间偏移。