Thee water is of second-class quality, according to mainland standards.
东江水水质属国家二级水源标准。 。
The second class is not only a useful supplement to the first class but also an effective way to improve the comprehensive quality and ability of students.
第二课堂既是第一课堂的有益补充，也是提高学生综合素质与能力的有效途径。
Our reputation for being easy to do business with and having best in class quality and operational excellence, is second to none.
我们易于合作，我们的产品拥有一流的品质和操控性，这在业界内都是无与伦比的。
Treated Waste water quality arrived Xinjiang oil-field's injection water quality criterion, national second class drain away water criterion, and oil boiler supply water quality criterion.
处理后的水质达到了新疆油田注水水质标准、国家二级排放标准和油田锅炉给水水质标准。
It was the first across the same industry awarded the national Second-Class Enterprise, with successful validation of the International Quality Certification of ISO9001:2000.
这是全国同行业第一个获得国家二级企业，ISO 9001质量体系验证成功的国际质量认证：2000年。
According to the 6 one-class districts and 12 second-class districts of flue-cured tobacco leaf planting area general evaluation of the quality of flue-cured tobacco leaf was conduct.
针对目前烤烟种植的6个一级区12个二级区，对其烟叶质量进行了综合评价，并提出了具体的质量改进意见。
According to the 6 one-class districts and 12 second-class districts of flue-cured tobacco leaf planting area general evaluation of the quality of flue-cured tobacco leaf was conduct.
针对目前烤烟种植的6个一级区12个二级区，对其烟叶质量进行了综合评价，并提出了具体的质量改进意见。
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