进行了碳化环境下预应力混凝土试件弯曲受拉和直接受压的耐久性试验研究，阐述了碳化作用对预应力混凝土结构的损伤机理。
The durability experiment of prestressed concrete specimens in the bending tensile status or in the directly compressive status in carbonation environment has been carried out.
经弯曲试验后，该膜仍可保持良好的疏水疏油的双疏性特征。
After the bending test, the mats could still keep their good amphiphobicity.
着重研究了机械冲击和应力对无铅BGA 封装焊点可靠性的影响，介绍了BGA 封装的可靠性力学试验（跌落、弯曲试验）及其分析方法。
The methodologies for free drop test and bending test are introduced, considering the important effect of mechanical stress on the reliability of lead-free BGA packaging.
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