您要查找的是不是:
- Preventing pollution by automobile emission ? 防治机动车排气污染物污染。
- Preventing pollution by automobile emission? 防治机动车排气污染物污染。
- pollution by fluorine 氟污染
- The river has been polluted by waste products from the factory. 这条河已经受到工厂排放的废料的污染。
- Fluorosurfactants basically consist of chains of carbon atoms surrounded by fluorine. 含氟界面活性剂的基本结构是碳原子形成的长链,周围环绕许多氟原子。
- Less pollution by decease of film and water waste. 5. 4.;降低废片及废水造成的环境污染。
- The area will be free of pollution by the year 2006. 到2006年,这个地区将没有污染。
- This will make drinking water safe in villages that are now moderately or seriously haunted by fluorine, arsenic or schistosomes. 使现已查明的中重度氟病区村、砷病区村、血吸虫疫区以及其他涉水重病区村实现安全饮水。
- Immediate steps should be taken to prevent pollution by excreta. 要立即采取措施防止排泄物污染。
- Reduces air pollution by minimizing the discharge of unburned hydrocarbon . 将未燃烧的碳氢化合物含量降至最低,减少了空气污染。
- Rice straw is recycled for reuse to avoid creating pollution by burning it. 避免燃烧稻草造成污染,稻草也要回收再利用。
- The fiver has been polluted by factory waste. 这条河流被工厂废物所污染。
- The water was polluted by refuse from the factory. 工厂所排放的废物弄脏了水。
- The air was polluted by factory smoke. 空气被工厂冒的烟污染了。
- Trifluoromethylaniline was synthesized by brominating 4-nitrotoluene, followed by fluorine substitutionand hydrogenation, with a yield of 59. 以对硝基甲苯为原料,经溴化、氟置换、加氢还原得4-三氟甲基苯胺,收率59。
- The river has been polluted by factory waste. 这条河流被工厂废物所污染。
- In our study of the transmutations with emission of neutrons produced in the light elements irradiated with alpha rays,we have noticed some difficulties in interpretation in the emission of neutrons by fluorine,sodium,and aluminium. 在研究排出中子的蜕变现象(这些中子产生于a射线放射出的轻量元素内部)的过程中,我们注意到,在解释由氟。钠和铝产生的中子排出现象中还有一些难点。
- The rapid growth of its population,industry and commerce remain at the root of pollution by human activities. 人口激增,工商业蓬勃发展,这些人类活动正是污染的根源。
- This Law shall apply to the prevention and control of pollution by liquid waste and gaseous waste in containers. 液态废物和置于容器中的气态废物的污染防治,适用本法。
- In our study of the transmutations with emission of neutrons produced in the light elements irradiated with alpha rays, we have noticed some difficulties in interpretation in the emission of neutrons by fluorine, sodium, and aluminium. 在研究排出中子的蜕变现象(这些中子产生于a射线放射出的轻量元素内部)的过程中,我们注意到,在解释由氟。钠和铝产生的中子排出现象中还有一些难点。