求翻译：格子砖材质从下到上分别为抗热震低蠕变高铝砖、低蠕变粘土砖、低蠕变高铝砖、硅砖。下部采用抗热震低蠕变高铝砖是为了提高耐火砖的承载能力和抵抗温度波动的能力，而硅砖具有很好的抗高温蠕变性能和热稳定性，正适合在高温区使用，且价格便宜。是什么意思？

Checker brick material from the bottom for the thermal shock resistance, low creep high alumina bricks, low creep clay bricks, low creep high alumina bricks, silica bricks. The lower part of the thermal shock resistance of low creep high alumina bricks in order to improve the the firebrick carrying