A method to ascertain airtightness of regulable refrigeratory, airtightness material selection and a way to made air retaining wall were discussed in this paper.
论述了气调库气密性的确定方法,气密材料的选择及气密层的做法,介绍了用正压法检测气调库气密性的具体操作过程,并给出了国内外的不同气密性标准。
Materials selection
英语例句库
原声例句
202320
Step 4: Material selection Choosing the right materials for our multifunctional compass is essential to ensure durability, weather resistance, and ease of use.
第 4 步：材料选择 为我们的多功能指南针选择合适的材料对于确保耐用性、耐候性和易用性至关重要。
英语百科
Material selection
（重定向自Materials selection）
Material selection is a step in the process of designing any physical object. In the context of product design, the main goal of material selection is to minimize cost while meeting product performance goals. Systematic selection of the best material for a given application begins with properties and costs of candidate materials. For example, a thermal blanket must have poor thermal conductivity in order to minimize heat transfer for a given temperature difference.
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