Physical complexity stands at basal position in the levels of system complexity.

物理复杂性在系统的复杂性层次中具有基础地位。

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" ...such as relatively low levels of malaria risk to start with, political stability, a good health system and low levels of population movement bringing in infections from elsewhere."

VOA: special.2010.11.03

Dr.Newman says the diagnostic test can be performed at all levels of the health system, including community settings.

VOA: standard.2010.03.09

Curriculums in every country or school system have expectations for levels of achievement, but the Massachusetts system is characterised by a particular focus on lists of specific pieces of information.

BBC: Massachusetts: Pioneering Gove's knowledge curriculum

The protected section was mostly about how the McAfee relationship is bearing fruit, letting Intel address security at the lowest levels of the computing system.

FORBES: Otellini Kicks Off IDF

In the Analytical Report and its recommendations special attention is paid at correspondence of the content of education to the demands of a present-day socio-cultural situation, ensuring continuity of education at different levels of the education system.

UNESCO: OFFICE IN MOSCOW