Its mechanism has been summarized as "Four Systems".

关于其机制此前已有较多的总结，认定是“四制”。

youdao

Four systems that support Linux, with Ethernet network adapters.

个装有以太网网络适配器的、支持Linux的系统。

youdao

The advantages and disadvantages of four systems are examined for reference of decision-makers.

分析了四种机制的优势和劣势，以便供决策者参考。

youdao

The Race to the Top competition will look for states and local school systems with effective reforms in four areas.

VOA: special.2009.07.30

Cows need about two to four weeks to learn to use the robotic milking systems.

VOA: special.2009.05.12

The robotic systems are designed to operate twenty-four hours a day.

VOA: special.2009.05.12

Ms Leggott added the hospital had four systems for booking operations so a full, accurate picture would be published by July.

BBC: Nottingham hospitals' plan for cancelled ops

The four systems run on Solaris 8 OS and extend the server line whose genesis in September was the Sun Fire 280R.

CNN: CeBIT: Sun puts new servers in spotlight

"There are four systems in nature that oscillate, and this is the last one where a single-channel measurement has crossed the five-sigma threshold - we know now about mixing in all four of these systems, " he told BBC News.

BBC: LHC's D-meson study wraps up antimatter 'flip' story