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。
An effective stress calculation formula for coal containing gas is proposed coupling with the swelling stress of gas adsorption in the effective stress principle for porous media.
经分析与实体零件的宏观与微观组织观察，此现象是因为还原介质渗入，引起合金体积膨胀而产生引力，造成应力裂纹。
Being the reducing medium, the volume expansion of alloy brings gravitation and crack through analysis and observation of accessory's macro-and micro structure.
它们是热膨胀、汽化和介质击穿。
They are thermal expansion, vaporization and dielectric breakdown.
由于其介质为高炉煤气，属于易燃、易爆、有毒气体，所以要求透平膨胀机的轴端密封系统必须安全可靠，且运行经济。
Its medium is blast furnace gas which is inflammable, explosive and toxicant. Therefore, the shaft end sealing system of a turbine expander must be safe and reliable, and has economic running.
在多孔介质有效应力原理中引入瓦斯吸附的膨胀应力，得出了适用于含瓦斯煤岩的有效应力计算公式。
The effective stress formulation for gas-saturated coal is derived by introducing the swell stress of gas adsorption into the effective stress principle of porous media.
得出膨胀力取决于限制膨胀的固体介质的弹性模量的结论。
We get the conclusion that the expansive pressure is determined by elastic modulus of the expanded solid medium.
同时，选取可使相变储能材料与结构功能一体化的多孔介质——膨胀珍珠岩作为石蜡的储能载体。
Meanwhile, selecting porous medium expanded perlite which makes phase change materials and structure into integration-as a carrier of paraffin.
采用单区燃烧模型模拟多孔介质（PM）发动机的压缩、燃烧和膨胀过程。
Porous medium(PM) was mounted into combustion chamber as the heat recuperator, and the working process of an engine is simulated by using a single-zone combustion model.
通过向高温死烧过的氧化钙中加入合适的添加剂，对水化过程进行控制，将膨胀能充分利用到介质破碎中。
Adding appropriate additive to the calcium Oxide sintered in the high temperature, and controlling the process of hydration will make the expansion fully exert to the fragmentation of rock.
膨胀石墨填料环的回弹性和结构将不会被化学介质所侵蚀。能提供有效的密封作用，并无任何螺栓扭矩损失。
The resiliency and structure of expanded graphite molded packing are not affected by chemical attack, consequently it provides effective seal without any torque loss.
膨胀石墨填料环的回弹性和结构将不会被化学介质所侵蚀。能提供有效的密封作用，并无任何螺栓扭矩损失。
The resiliency and structure of expanded graphite molded packing are not affected by chemical attack, consequently it provides effective seal without any torque loss.
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