permanent hardness 中文意思是什麼
permanent hardness
解釋
水的永久硬度-
And its integrated performance is very excellent, such as : good atomizer, thick paint membrane, permanent, hardness, flexibility, high impact, strong stickiness, enduring colorful
施工簡便,霧化優、漆膜豐滿、耐候性、硬度、柔韌性、耐沖擊、附著力強、色澤持久不變等綜合性能優。
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