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- For Slate, gradually replaced by Zinc plate. 后因石板重荷,忽然被锌板代替。
- 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 zinc 锌污染
- 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。
- Copper atoms are replaced by zinc atoms as the amount of zinc is increased. 随着锌量的增加,铜原子逐步为锌原子所替代。
- 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。
- Results showed: Zinc toxicity was enhanced by cadimum under compound pollution , wherever cadmium toxicity was alleviated by zinc. 结果表明,锌镉复合污染加剧锌的毒害作用,但缓解镉毒性,其原因在于:低浓度镉促进锌吸收、浓度锌抑制镉吸收。
- The holes for the attachment bolts are reinforced by zinc plated sheet steel inserts. 为安装螺栓准备的孔都用镀锌钢板插入件加强。
- The steel model of various mementoes, metal stamps, metal cards and relief sculptures made by zinc allay are d0minated in this company. 主要从事浮雕艺术钢模、各类高级纪念章、金属邮票、金属纪念卡、精品浮雕锌合金礼品的制作。
- 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。
- The speedy cooled strip is equalized here to the temperature accepted by zinc pot. 使经快速喷射冷却的钢板温度均匀一致,达到钢板入锌锅的温度。
- 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。
- Investigation on the Vegetable Farm Soils Polluted by Zinc, Copper and Lead in Suburb of Hangzhou 杭州市郊菜园土壤锌、铜、铅污染状况的调查
- The fiver has been polluted by factory waste. 这条河流被工厂废物所污染。
- By zinc and chrome-plated on the surface of the carbon tube, the capability of prevent corrosion can be improved a lot. 碳钢半圆无缝钢管外表面可镀锌或镀铬,加强防腐能力。
- The water was polluted by refuse from the factory. 工厂所排放的废物弄脏了水。
- A method of synthesis of isoamyl acetate catalyzed by zinc sulfate had been developed. 以硫酸锌为催化剂催化合成了乙酸异戊酯,确定了酯化优化条件。