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- biological nitrate removal 生物脱氮作用
- Westerhoff P., J. James, “Nitrate removal in zero-valent iron packed columns”, Water Research, 37, 1818-1830(2003). 李明堂，元素铁配合二氧化碳曝气去除水中硝酸盐，嘉南药理科技大学环境工程学系，硕士论文(2004)。
- The satisfying results were also obtained in the reactions for catalytic decomposition of ammonia,water-gas shift and nitrate removal from wate... 在氨催化分解、水煤气转化、除去水中硝酸盐的反应中使用钯膜也得到了令人满意的效果。
- Both the nitrification and denitrification performance decreased obviously, although the nitrate removal in the first anoxic zone was increased when the value of R was higher than 1.0. 结果表明，当R值高于1.;0时，尽管第一段缺氧区的硝酸盐氮去除量明显增加，而系统硝化、反硝化效果均明显降低。
- A comparison test of COD and nitrate removals under the conditons of pre-and post-electrode-biofilm was conducted. 进行了电极-生物膜前置和后置条件下去除污水中COD和硝酸盐氮的对比试验。
- nitrate removal by barium method 钡法除硝
- nitrate removal by membrane method 膜法除硝
- anaerobic sulfide and nitrate removal 厌氧脱氮除硫
- The results showed, the nitrate removing ratio (NRR) went down when temperature rose, which showed raising temperature would be beneficial to desorption. 由于实际应用的情况非常复杂，所以本文通过影响因子对吸附剂吸附硝酸盐能力的影响试验，研究了各种环境因子对吸附的影响。
- Some biological molecules have the form of a helix. 有些生物分子呈螺旋状。
- Advance of aqueovs nitrate removal by catalytic hydrogenization 催化加氢法脱除水中硝酸盐的研究进展
- Using paper as the carbon source for groundwater nitrate removal 以纸为碳源去除地下水硝酸盐的研究
- The school has a large biological laboratory. 这所学校有一个很大的生物实验室。
- Surgical removal of part or all of the uterus. 子宫切除术将子宫的全部或部分通过外科手术切除
- Surgical removal of all or part of a lung. 肺切除术，肺部分切除术对整个或部分肺的外科手术切除
- He consented to the removal of the flags. 他同意撤走旗帜。
- The convention bans the stockpiling of biological weapons. 该公约禁止储存生物武器。
- Surgical removal of part of the iris of the eye. 虹膜切除术手术切除部分虹膜
- Nitrate of soda may be sown on pasture that does not eat off. 可以把硝酸钠撒在牧草还没有吃光的草地上。
- Surgical removal of a nerve or part of a nerve. 神经切除神经或其一部分的外科节除手术
