An effective stress calculation formula for coal containing gas is proposed coupling with the swellingstress of gas adsorption in the effective stress principle for porous media.
首先在多孔介质的有效应力原理中引入瓦斯吸附的膨胀应力，推导出了适用于含瓦斯煤岩的有效应力计算公式。
2
The stress of surgery, lack of sleep and recuperation that often includes pain, fatigue and swelling causes most to experience some degree of depression.
手术的压力、睡眠不足、术后恢复经常会伴随着疼痛、疲惫和肿胀，这些症状都让人感到很沮丧。
3
That response, however, comes at a price. The larger the swelling, the greater the immune stress on the bird and the more energy its immune system is consuming to fight off the effects of pathogens.