the macroscopic property of the material differs from its microcosmic property greatlythe existing macroscopic theory is usually no longer suitable under the condition of the mesocosmic or microscopic view
材料的宏观性质与微观性质差别很大，现有的宏观理论在中观或微观条件下往往不再适用
以上为机器翻译结果，长、整句建议使用 人工翻译 。