介绍了胶合砂的基本配方、主要技术指标及防砂机理。
Basic formulation, main technique index and sand control mechanism for agglutination sand are introduced.
介绍了该仪器的工作原理，基本结构，主要技术指标。
The working principle, basic structure and main technical target of the instrument is introduced.
介绍了该仪器的工作原理，基本结构，主要技术指标。
The working principle, basic structure and main technical target of the instrument is introduced.
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