water proof glue

基本解釋

Rib of slab has prominent water-proof capability. It is fixed by hidden key without any glue. No bolt on the outside surface which prevent from pollution and aging.
立邊板肋具有極佳的防漏水性能，不需打膠，暗扣方式固定，表面無外露螺釘，免得污染老化問題。
Water-proof adhesive glue should be filled in the inner cavity of junction boxes at wet areas. Connection ends of the parts in hazardous areas shall be added explosion proof daub.
潮濕區(qū)域的接線盒內(nèi)腔應(yīng)灌注防水膠，防爆區(qū)域部件連接端應(yīng)填加防爆膠泥。
Two kinds of PVA solution, which have different polymerizing degrees, are mixed with ammonium dichromate to obtain a high-resolution, water-proof developing photosensitive glue solution.
本發(fā)明方法是用兩種不同聚合度的聚乙烯醇溶液與重鉻酸銨混合，得到高分辯率的、耐水沖洗顯影的感光膠液。
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