The average bond rating fell from a in 1981 to BBB - today, just one notch above junk status.
债券平均评级已经从1981年的A滑落至如今的BBB-，距垃圾债不过一步之遥。
The critical anchorage length and ultimate load functions are derived in response to the average bond stress.
基于所得平均粘结强度，推导了临界锚固长度和极限荷载表达式。
Based on the push-out tests of steel reinforced lightweight concrete specimens, average bond strength and local bond strength are studied by orthogonal experimental design.
通过正交试验设计，由推出试验研究了型钢轻骨料混凝土的平均粘结强度和局部粘结强度。
According to the test consequences, equations of average bond stress, relationship between the maximum local bond stress and concrete cubic compression strength are proposed.
根据试验结果，拟合了平均粘结强度表达式，得到了局部粘结应力最大值和混凝土立方体抗压强度的关系。
According to the test consequences, equations of average bond stress, relationship between the maximum local bond stress and concrete cubic compression strength are proposed.
根据试验结果，拟合了平均粘结强度表达式，得到了局部粘结应力最大值和混凝土立方体抗压强度的关系。
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