Coarse and uniform sand, as filtering material, could prevent filtering material loss and agglomeration.
粒径较粗且均匀的河沙滤料的使用，避免了滤料的大量流失和滤料结块。
The invention is uniform mixture made by medicine and auxiliary material capable of forming gel.
本发明是系药物与能形成凝胶的辅料制成的均匀的混合物。
The invention is uniform mixture made by medicine and auxiliary material capable of forming gel.
本发明是系药物与能形成凝胶的辅料制成的均匀的混合物。
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