| 1. | Photo of biochemical oxygen demand bod5 in the river beas
图片双鱼河rb3的五天生化需氧量 |
| 2. | 5 - day biochemical oxygen demand bod 5
五天生化需氧量 |
| 3. | These three parameters are dissolved oxygen , 5 - day biochemical oxygen demand bod5 , and ammonia - nitrogen nh3 - n content
这三项参数分别是溶解氧五天生化需氧量和氨氮水平。 |
| 4. | The index monitors the level of dissolved oxygen , 5 - day biochemical oxygen demand and ammonia nitrogen content in our waterways
指数反映河水中的溶解氧含量、五天生化需氧量以及氨氮水平。 |
| 5. | Organic pollution of river water is measured by three parameters , namely 5 - day biochemical oxygen demand , chemical oxygen demand , and total organic carbon
水中有机污染含量是透过三项参数计量：五天生化需氧量化学需氧量及有机碳总量。 |
| 6. | The parameters used for calculating wqo compliance include ph , suspended solids , dissolved oxygen , 5 - day biochemical oxygen demand , and chemical oxygen demand
用于计算水质指标的参数包括酸硷度悬浮固体量溶解氧五天生化需氧量及化学需氧量。 |
| 7. | Those key parameters that the epd monitors and uses for calculating the wqo compliance rate include ph , dissolved oxygen , 5 - day biochemical oxygen demand , chemical oxygen demand and suspended solids
环保署用于监测和评估水质指标达标率的主要参数包括酸硷值溶解氧五天生化需氧量化学需氧量及悬浮固体。 |
| 8. | Low dissolved oxygen can be harmful to most aquatic life , whereas high 5 - day biochemical oxygen demand and ammonia nitrogen levels indicate the presence of organic pollution and sewage contamination
溶解氧含量过低会危害大部分水生物的生存，而五天生化需氧量和氨氮水平则显示河溪受有机物和生活污水污染。 |
| 9. | Farmers outside the prohibition areas were permitted to continue rearing livestock , but they were required to properly dispose of their waste and treat their effluent so that it complied with standards of no more than 50 mg l of suspended solids and 50 mg l of 5 - day biochemical oxygen demand by the mid - 1990s
禁制区以外的禽畜农户继续获准饲养禽畜，但必须适当地处置禽畜废物和污水，在1990年中期之前达到污染物排放标准，即悬浮固体含量不超过50毫克公升，五天生化需氧量不超过50毫克公升。 |
