subnormal pressure

The low pressure is not a true meaning subnormal pressure, because that the piezometric surface is lower than the ground surface, but people give a wrong assumption in the course of showing the relative size of pressure.

在中国西部盆地，因地形起伏较大，承压面低于地表，使得地层压力偏低，但并非真正意义上的低压，只是由于表达方式（起算深度是否等于地表）的原因而造成。

Deep basin gas is an abnormal gas accumulation with characters of subnormal pressure and gas_water inversion caused essentially by its tight reservoir.

深盆气藏是一种特殊机理形成的具有气水倒置和负压异常等特征的致密气藏。

The results show the lower subnormal pressure and the higher ambient temperature, the shorter existing time for fuel droplet.

结果显示，负压环境下，压力越低，环境温度越高，燃料液滴的生存时间越短。