发布时间:2025-01-31 05:08:57
水。
石膏粉用水进行调和,只使用水调和石膏粉的粘结效果不佳,容易导致开裂或脱落。添加乳胶时,采用水和乳胶的比例为3:1,提高石膏粉与基面的粘结度,调和石膏粉时,不宜批太厚的层次,会容易导致脱落。
怎么用回形针开一字锁128274求方法越简单越好家里电脑房门锁上钥匙丢了谢谢救下急
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