The multi-level structure of erosion, transportation and accumulation in a slope system and its space scale effect are very important for the soil erosion quantity evaluation.
分析了土壤侵蚀中的侵蚀、搬运、堆积的层次结构及所表现的空间尺度效应的形式、产生的机制和原因。
A novel beam-membrane structure was proposed, with a small size and obvious effect of centralizing stress, especially fitting low scale pressure sensor of strain type.
提出了一种新型的梁膜结构，其体积较小、应力集中效应明显，特别适合作小量程应变式压力传感器。
Owing to the enterprise compete for the raw milk and the scale effect of big enterprise, the access barrier was raised. Dairy manufacturing industry has the structure of monopolistic competition.
企业对奶源的争夺和大企业规模效应，奶业的进入壁垒逐步提高，行业处于垄断竞争型的市场结构。
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