The porosity of coal is one of its advantages.

煤炭的多孔性是它的优势之一。

The porosity is good for water running.

孔隙有利于水的流动。

Porosity and temperature can sometimes affect seismic wave velocity.

孔隙率和温度有时也能影响地震波速。

The study result was verified by porosity testing.

分析结论通过孔隙率检验得以证实。

Welding porosity is the main defect during laser welding.

焊接气孔是粉末冶金材料激光焊接的主要缺陷。

The mechanical compaction is the main cause of porosity loss.

压实作用是造成砂岩孔隙度降低的最主要因素。

Metallic foams are new engineering materials with high porosity.

金属泡津材料是一种高孔隙率的新的工程材料。

Medium and large cells should have the same porosity, primarily in M2.

中型和大型单元都有相同的孔隙度，主要都是在M2层。