The concrete durability under the compound action of freeze-thaw and abrasion is studied.
研究了冻融与磨耗复合作用下的混凝土耐久性能。
The main physical geographical processes are freeze-thaw action and fluviation at the small watershed of the Xinfenggou village.
冻融作用和流水作用是新丰沟小流域中最明显的自然地理过程。
The main physical geographical processes are freeze-thaw action and fluviation at the small watershed of the Xinfenggou village.
冻融作用和流水作用是新丰沟小流域中最明显的自然地理过程。
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