If it dissolves and then reappears as a white residue when dry, it's likely efflorescence. This occurs when moisture infiltrates masonry or concrete surfaces and evaporates, leaving salt deposits on the surface behind. Another potential culprit is mold. Apply a few drops of household bleach to ...
a你能告诉我一些具体的事情吗 You can tell me some concrete matters [translate] a单词卡、圣诞帽 Word card, Christmas hat [translate] aYour Name Frozen On My Lips [translate] a请我吃饭,好饿。。。 Asks me to eat meal, good hungry.。。 [translate] a公司主要从事仓储、物料加工和分拔、装柜...
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residue on lgnition % 0.2max ph -- 5.0-7.0 Na ppm 0.1max Pb ppm 3max Main Function (1) With the function of increasing human bifidobacterium and adjusting gastrointestinal function; (2) With the function of enhancing immune function; (3) With the function of reducing blood sugar a...
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Synthesis of high belite sulfoaluminate cement at low sintering temperatures (1225-1300 degrees C) using petroleum coke desulfurization residue (PCDR), fly... X Wang,MZ Guo,G Yue,... - 《Cement & Concrete Research》 被引量: 0发表: 2022年 ...
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The sun rose halfway in the sky, exposing the ugly riverbed. Shuangfu was building houses on a hill, where the workers were pouring concrete. It looked permanent. Sand boys hired by other managers were either digging pits or throwing up ...