microannulus
美
英 
例句
However, in severe cases the microannulus may encircle the entire casing circumference.
但是在严重的情况下,微环隙可围绕整个套管圆周。
Such variations cause small movement of the steel casing, breaking the cement bond and creating a microannulus that is typically partial.
这些变化引起钢质套管的小移动和水泥胶结破裂并产生微环隙,此微环隙一般是局部范围的。