常见例句

双语例句

The key pollution indicators are ammonia nitrogen, petroleum, potassium permanganate index and volatile phenol.
主要污染指标是氨氮、石油类、高锰酸盐指数、挥发酚。
Through the tests of standard samples, the degree of affecting permanganate index by these 5 factors are investigated.
通过环境标准样品的分析试验，考察这5个因素对高锰酸盐指数的影响程度。
This method is applicable to quality control of permanganate index. Glucose was used as reference material and the way to preparing and calibrating of quality control samples were also given .
叙述了以葡萄糖作为测定水质高锰酸盐指数质控样的配制、定值方法。