Among them, flat dilatometer test belongs to a newer method of in-situ test which has not popularized in the field of geotechnical engineering in Yunnan Province.
其中，特别引入的扁铲侧胀试验在云南省的岩土工程领域尚未推广开来，属于较新的原位试验方法。
2
The CCT curves of pipeline steel X80 were drawn by adopting dilatometer and metallographic method, and the effects of cooling rates on microstructure and hardness of the steel were studied.