IMD的解决方案的电流限制元素本身性能，最大限度地发挥在艰苦的报道甚至接待地区。
IMD solutions confine the currents on the element itself, maximizing reception performance even in tough coverage areas.
XML Schema 1.0同时提供复杂类型和简单类型定义，允许模式作者指定并限制元素的内容和属性值。
Complex and simple type definitions in XML schema 1.0 allow schema authors to specify and restrict the content of elements and values of attributes.
ICH Q3D指南强调了开发基于风险的控制策略来限制元素杂质，该方法在“风险管理总结”文件里进行汇总。
The ICH Q3D guideline emphasises developing a risk-based control strategy to limit elemental impurities which is summarised in an appropriate "Risk Management Summary" document.
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