结果表明PET和PET（PHB60）在熔融时可发生分子链间酯交换，得到有一定嵌段性的共缩聚物；
The results show that the block PET-PET(PHB60) copolycondensate was obtained duto in melt blending exists transesterification reaction between molecular chains of PET and PET(PHB60).
轴向嵌固力对管道的横向位移有一定程度的影响，但在具体计算时往往被忽略。
Axial build-in force does has a certain effect on pipeline's transversely displacement but it is usually to be neglected in concrete calculation.
随着桩身嵌固深度的增大，桩身位移减小，当嵌固深度达到一定程度时，其变化对支护结构的影响很小。
Along with the increase of pile mounted depth, the pile displacement decreases. But when the mounted depth come to a certain value, the change of depth has little impact on retaining structure.
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