Based on in depth studies of structure of membranes, the principle of water osmosis in single direction was put forward, and water osmotic plastic film was designed and developed.
经过对地膜物料结构的深入研究，提出了单向渗水原理，设计并发明了渗水地膜。
Based on in depth studies of structure of membranes, the principle of water osmosis in single direction was put forward, and water osmotic plastic film was designed and developed.
经过对地膜物料结构的深入研究，提出了单向渗水原理，设计并发明了渗水地膜。
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