After blasting or surface treatment chemically and cleaning by solvent, the metal insert was plated FR1, predried, then adhered by thermal cure, a good effect was gained.
金属骨架经喷砂或表面化学处理并用溶剂清洗之后，涂FR 1型粘合剂，经预烘干后与橡胶进行热硫化粘着，效果良好。
The coal extraction rate could be increased with the suitable selected solvent, the increased extraction temperature, the acid pre-treatment before the thermal extraction and other method.
选择合适溶剂、提高萃取温度、热萃取前加酸预处理等方法均可提高煤的萃取率。
The coal extraction rate could be increased with the suitable selected solvent, the increased extraction temperature, the acid pre-treatment before the thermal extraction and other method.
选择合适溶剂、提高萃取温度、热萃取前加酸预处理等方法均可提高煤的萃取率。
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