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- In this paper,the relation of heterotrophic bacteria to nitrogen and phosphorus in marine environment is studied by adding nitrogen and phosphorus to the seawater in mesocosm. 利用海洋围隔生态系统实验装置,向海水中施加不同浓度的氮和磷,研究海洋异养细菌与海水环境中氮、磷的关系。
- It is deduced that nitrogen bonds in Drayton coal are probably more stable than in Shenmu coal. Drayton煤中氮的价键结合方式可能比神木煤强;
- The bulk weight and total flour extraction rate were more sensitve to nitrogen and phosphorus supply than 1000-grain weight. 氮磷水平与比例的提高,对各基因型千粒重的影响很小,却使容重显著降低,总出粉率普遍显著增加。
- Combustion at high temperature causes decomposition to nitrogen and water. 氨在高温下燃烧分解成为氮和水。
- Nitramines are substances which contain a nitro group bonded to nitrogen. 含有与氮原子相连的硝基的物质称为硝胺。
- When the tube was broken, air rushed in, causing the phosphorus to self-combust. 当管体破裂,空气涌进,导致磷的自燃。
- You need a strong adhesive to bond wood to metal. 需要强力胶才能把木料粘在金属上。
- Most fruits and vegetables contain some phosphorus and help to balance the ratio of phosphorus to calcium in a wholesome diet. 最大多数的水果和蔬菜包含一些磷和帮忙平衡对一种有益健康的饮食钙磷的比。
- Methods Examine and analyse the hygienic con dition of oral cavity and the content s of serum calcium and phosphorus to 102elderly. 方法对102名老年人进行口腔检查和血清钙磷含量的测定,并进行临床分析。
- The introduction of phosphorus to improve the flame retardance of epoxy resin systems has been the focus of attention by researchers in recent years. 将磷导入环氧树脂体系而赋予其阻燃性能是目前热门的研究课题。
- As to nitrogen sources,pathogen made use of urea,NH4Cl,(NH4)2SO4 much better than others. 以尿素、NH4Cl和(NH4)2SO4为氮源的利用程度较高,以甲硫氨酸和Ca(NO3)2为氮源的利用程度较低;
- Seed Yield Response of Smooth Brome to Nitrogen, Plant Growth Regulator and Environmental Influences. 氮肥、植物生长调节剂和环境因素对无芒雀麦种子生产的影响。
- Placing the usual swine manure in the fields can increase the phosphorus content of the ground. And when rains cause the phosphorus to wash away, it can harm the environment. 把普通的猪粪浇灌在农田里可以增加土壤中磷的含量。但是下雨的时候就会冲走土壤中的磷,这样就对环境有害了。
- Some companies are solving the problem by adopting alternatives to nitrogen trifluoride. 一些公司选择了接受三氟化氮的替代品来解决这个问题。
- The calculated results showed that ZMS adsorbent adsorbs preferably oxygen to nitrogen. 实验结果表明,沸石分子筛吸附剂优先吸附氮。
- Remobilization of nitrate in leaf vacuoles of crops is closely related to nitrogen use efficiency of crop. 作物液泡中硝酸根离子的再调动和再利用与作物氮素高效利用关系密切。
- How much do all these figures stack up to? 这些数字的总和是多少?
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。