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- pollution by boron 硼污染
- 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。
- 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。
- Therefore, It is feasible to predict daily boron exposure by boron concentration of post-shift urine. 说明用班后尿硼浓度预测日硼暴露剂量是可行的.
- 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。
- Immediate steps should be taken to prevent pollution by excreta. 要立即采取措施防止排泄物污染。
- Boron carbide nanotubes (nano-fibers) was prepared by boron powder and carbon nanotubes (CNTs) at high temperature in a quartz tube after being vacuumed. 摘要以碳纳米管为原料,利用真空封管技术在高温下用硼粉对碳纳米管进行掺杂处理,获得了破化硼纳米管(纤维)。
- 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。
- Boron carbide nanotubes(nano-fibers) was prepared by boron powder and carbon nanotubes(CNTs) at high temperature in a quartz tube after being vacuumed. 以碳纳米管为原料,利用真空封管技术在高温下用硼粉对碳纳米管进行掺杂处理,获得了碳化硼纳米管(纤维)。
- The river has been polluted by factory waste. 这条河流被工厂废物所污染。
- 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。
- The implanted silicon occupying Ga Sublattice sites behaves as the shallow donor Si_(Ga) and that being held on As sublattice sites by boron behaves as the shallow acceptor complex B_(Ga) Si_(as) or Si_(As). 认为BF~+的影响主要反应在B的影响,由于B的掺入使B替Ga位从而促使大量Si去替As位,形成B_(Ga)-Si_(As)和Si_(As)受主,从而减少了Si_(Ga)的施主浓度并且补偿了n型载流子浓度。
- 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。
- Reducing pollution by, say, 90 percent may be relatively inexpensive for some plants but very costly for others. 减少污染,比如说90%25,对某些工厂相当便宜,而对另外一些工厂却是相当昂贵。