low-grade sugar是什么意思

用法例句

To study the performance and application value of low grade cotton and make full use of resources,the performances of low grade cotton with high moisture and foreign impurities have been tested and analysed.

为探讨低级棉的性能与应用价值,合理利用资源,对高含水、高含杂低级棉的性能进行了测试和分析。