mission-critical system

基本解释

But I would definitely not feel comfortable about having a mission-critical system work with an internal discrepancy such as this.
但是我不会明确地觉得满意，因为这类情况下对于关键事务系统工作会带有内部差异性。
For example, your organization has purchased, installed, and is running a mission-critical CRM system that has a distributed architecture.
举例来说，您的组织已经购买、安装，并运行分布式结构的关键任务的 CRM 系统。
But it is also at the heart of a mission-critical system, called Mix, and must be undertaken to support the modernization of other systems in the Department.
但是，它却是系统的核心，称为 Mix，而且，必须支持部门内其它系统的更新。

What happens when Apple has a mission-critical system fail?
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If the IT staff makes an inappropriate administrative change, it could expose mission-critical workloads to the world at large, or bring the system to a screeching halt and trigger serious downtime.
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