The successful concrete construction and quality control provides guarantees on reducing surface cavitation and increasing abrasion-resistance capacity.
泄洪洞抗冲耐磨混凝土施工及质量控制的成功，为减小泄洪洞过流面空蚀和抗冲耐磨提供了保障。
Washing corms with running tap water overnight before sterilization were effective for reducing surface epiphytic microorganisms significantly and depressing the rate of contamination.
此外，表面灭菌前采用流水冲洗过夜可有效减少球茎表面附生菌，明显降低污染率。
When surface cover of natural grassland reaches 90%, the benefits for grass reducing surface runoff is above 90% and not any erosion occurs.
当草地地面覆盖达90%时，草被拦蓄径流效益达90%以上，而基本上无侵蚀发生。
By the interaction of the amphoteric surfactants AHDHPB-12 with anionic surfactants (AS), the efficiency and the ability of reducing surface tension were investigated.
研究了AHDHPB 12和阴离子表面活性剂(as)复配体系的降低表面张力能力、降低表面张力效率的增效作用。
By the interaction of the amphoteric surfactants AHDHPB-12 with anionic surfactants (AS), the efficiency and the ability of reducing surface tension were investigated.
研究了AHDHPB 12和阴离子表面活性剂(as)复配体系的降低表面张力能力、降低表面张力效率的增效作用。
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