食物链等级体系中的高等级物种平均捕获率(而捕获正在并将持续进行)处于持续上升态势之中——按照所谓食物链等级理论，这应当意味着海洋生态系统的健康平衡发生了变化。
The average trophic level of what is being caught is rising — and this in principle should indicate improving ecosystem health.
当时，各部门根据一种通常将卫生保健置于底层的等级体系，单独无系统地开展工作。
At that time, different sectors were working in an isolated, fragmented way according to a hierarchy that usually put health near the bottom.
城市体系是一定地域范围内不同等级、不同性质的城市所组成的相互联系、相互作用的系统。
The Urban system is a system that consists of some cities and these cities are different in scale and character and interact with each other.
本文采用系统方法概括医疗单位消毒工作整体，制定出医疗单位消毒质量内容全部体系及等级的评价标准进行综合评价。
The quality control and criteria for rank evaluation of effect on disinfection in medical units were established by using the comprehensive system index method.
城市中心体系规划是以城市不同主导职能、不同等级规模、不同服务范围的公共中心集合构成的整体系统作为研究对象的规划。
Urban center system planning studies the system that is made up of public centers of different leading functions, different levels and scales, and different service scopes.
应用实例表明，该指标体系与专家系统有效地解决了对供应商信用等级进行分析评估的问题。
The application shows that the index system and expert system can evaluate the credit level of sup…
总结了系统功能安全测试的关键技术，包括基于功能安全的安全标准体系、安全完整性等级、整体安全生命周期。
Key technologies of system functional safety test are summarized. These include safety standard architecture, integrated safety level and integrated safety lifecycle.
构建了综合与专项公路自然区划的原则、方法和指标体系，以及相应的区划等级系统及命名。
Principle, methods and index system of comprehensive and specific zoning for highway as well as corresponding names are proposed in the paper.
构建了综合与专项公路自然区划的原则、方法和指标体系，以及相应的区划等级系统及命名。
Principle, methods and index system of comprehensive and specific zoning for highway as well as corresponding names are proposed in the paper.
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