综述了牛奶中的天然抗菌活性体系——乳过氧化物酶体系的抗菌机理及其在牛奶保鲜中的有效应用。
The article mainly summarized the natural antibacterial activity system in milk-the lactoperoxidase system's antibacterial mechanism and effective application for the preservation of milk.
一般自然灰岩坑形成机理是由于有份量的水饱和土导致地下石灰岩洞顶层坍塌，或者由于水加宽了石灰岩床的天然裂缝而导致。
Natural sinkholes generally form when heavy, water-saturated soil causes the roof of an underground limestone cavity to collapse, or when water widens a natural fracture in limestone bedrock.
当研究天然气管道内腐蚀机理时，有必要对管道进行内腐蚀程度的评价。
When corrosion mechanism was studied for internal corrosion of gas pipeline, internal corrosion degree of pipeline should be evaluated.
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