The averagebond 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。
2
The critical anchorage length and ultimate load functions are derived in response to the averagebond 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。
3
Based on the push-out tests of steel reinforced lightweight concrete specimens, averagebond strength and local bond strength are studied by orthogonal experimental design.