可应用于任何安全模型的一种防护措施是分级数据访问。
One safeguard that can be placed on any security model is graduated data access.
结果表明，随着积分级数的增加，像移对相机成像质量的影响越来越大，尤其表现为偏流角及速高比的变化。
The effects of the image motion caused by them on the image quality for different integral numbers are calculated and simulated for a given orbit and camera.
IOWA测验（基本语言能力测验）共分14级。每一级数皆是以美国当地学生的程度做为分级标准。
The IOWA TESTS OF BASIC SKILLS (ITBS) has 14 Levels. Each level of the ITBS pertains to an appropriate Grade Level of a United States student.
IOWA测验（基本语言能力测验）共分14级。每一级数皆是以美国当地学生的程度做为分级标准。
The IOWA TESTS OF BASIC SKILLS (ITBS) has 14 Levels. Each level of the ITBS pertains to an appropriate Grade Level of a United States student.
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