non metallic coating

coat-英汉词典-英中字典... ... non-metallic coating 非金属覆层,非金属涂层 non-metallic inorganic coating 非金属无机覆盖层 ...

机械英... ... non-metal valve 非金属阀 non-metallic coating 非金属覆盖层，非金属涂层 non-metallic composite 非金属复合材料 ...