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。
Environmental testing for electric and electronic products. Part 2:Test methods. Tests A:Cold.
电工电子产品环境试验。第2部分：试验方法。试验A：低温。
Environmental testing for electric and electronic products. Part 2: test methods. Tests B: Dry heat.
电工电子产品环境试验。第2部分：试验方法。试验b：高温。
Currently, 3 test methods, including the natural environmental testing, the natural accelerated testing and the laboratory accelerated testing, are used to evaluate materials durability.
目前，评价材料耐候性的试验技术主要有自然环境试验、自然环境加速试验和实验室加速试验3种方法。
Performance indicators in line GB5170.18 "electric and electronic products, the basic parameters of environmental testing equipment, test methods" requirements.
性能指标符合GB5170.18《电工电子产品环境试验设备基本参数检定方法》的要求。
Agricultural Cabs - Environmental Air Quality - Definitions, Test Methods, and Safety Practices.
农机驾驶室。环境空气质量。定义，试验方法和安全操作规程。
Agricultural Cabs - Environmental Air Quality - Definitions, Test Methods, and Safety Practices.
农机驾驶室。环境空气质量。定义，试验方法和安全操作规程。
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