定义 中文名称: 第一壁材料 英文名称: first wall materials 其他名称: 面向等离子体材料 定义: 用于制造聚变堆内包容等离子体区和真空区部件的材料。通常有石墨、碳?-?碳复合材料、铍和氧化铍用作第一壁表面覆盖层材料;
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Charges for water, wall materials and special fund of the bulk cement and Civil Air Defense transfer-construction costs will be first collected and then 50% returned with financial support.
对水资源费、墙体材料专项基金、散装水泥专项资金和人防易地建设费,先征收再由财政支持50%。
The experiment and first application of concrete split brick as compound protecting materials in replacement of traditional materials in the project of waterway retaining wall are expounded.
介绍混凝土劈离砌块在内河航道护岸工程中作为复合护面结构取代传统材料的试验与应用。
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