Optics and optical instruments - environmental test methods - combined cold, low air pressure.
光学和光学仪器。环境试验方法。混合式低温和低气压。
Methods: Genetic, environmental factor analysis and skin prick test were adopted in 213 allergic dermatitis patients.
方法对三种过敏性皮肤病共213例患者进行遗传、环境因素调查及皮肤过敏原点刺试验。
It could provide a base for urban planning and environmental noise control, and test the effectiveness of different methods of reducing noise whether by planning or noise reduction techniques.
它为城市规划、城市环境噪声管理提供了依据，也是检验噪声污染防治技术措施和规划控制措施有效性的重要手段。
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