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				           		Basic formulation, main technique index and sand control mechanism for agglutination sand are introduced.
						        										 	
						        					            	 介绍了胶合砂的基本配方、主要技术指标及防砂机理。
								    				            	 youdao 
- 
				           		Basic formulation, main technique index and sand control mechanism for agglutination sand are introduced.
						        										 	
						        					            	 介绍了胶合砂的基本配方、主要技术指标及防砂机理。
								    				            	 youdao