quality of matrix structure的用法和樣例：
例句
- The rock quality evaluation can be taken as a pattern recognition or classification problem.
岩體質量評價問題可以認為是一個模式識別或分類問題。 - For this reason, we made a analysis of the stress to the backfilling, pointed out the measures ensured in imporving the quality and intensity of the backfilling.
為此，對充填體進行受力分析，根據影響充填體的穩定性因素，提出了保證充填體質量及提高充填體強度的措施。
