He suggested that the varieties tested had different diffusive resistance to CO2. 他提出，供试验用的品种对二氧化碳有不同的扩散阻力。
Metal deposits caused a gradual deactivation by the decrease of intrinsic reactivity and the increase of effec to finternal diffusion. 金属硫化物在催化剂上的沉积会造成催化剂本征活性的降低及内扩散阻力的增加。
