求翻译：磷酸盐含量均在7月份达到最高点，亚硝酸盐氮含量在9月至10月和12月至次年2月间保持在较高水平，硝酸盐氮均在11月份达到最高点，氨氮的含量均在5月份最高，COD值在10月和12月较大，BOD至则均在10月份达到最高点。是什么意思？

Reached its highest point in July, the phosphate content, nitrogen content of nitrite in September to October and December to February the following year, remained at a high level of nitrate nitrogen in November reached its highest point, ammonia nitrogen levels were highest in May, cod values ​​in

Phosphate levels were highest in 7 Month, and nitrite nitrogen content in September and October and December to February the following year in a relatively high level in both nitrate nitrogen in November, to the highest point of the ammonia and nitrogen content is highest in 5 month, COD value in 10

The phosphoric acid salt content achieves the peak in July, the nitrite nitrogen content and from December will maintain in from September to October to the next year February at the high level, the nitrate nitrogen achieves the peak in November, the ammonia nitrogen content will be highest in May,

Phosphates content in July reached the highest point, nitrite nitrogen contents between September and December to February the following year maintained at a relatively high level, nitrate nitrogen in November reached the highest point, content of ammonia nitrogen is highest in May, COD values in th

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