查询词典 nitrogen

The strongest attraction between two dipoles is when one or both of them involves a bond between hydrogen and a strongly electronegative atom, like oxygen, fluorine, or nitrogen.

氢键：氢键是极性很强的X－H键上的氢原子与另外一个键上电负性很大的原子上的孤对电子相互吸引而形成的一种键。

Bond'.'' consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent ''.

一种化学键：由两个负电原子及其间的氢原子组成，其中一边是共价键，另一边是离子键。

Atom'.'' between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond.

负电'。''''。'原子'。''及其间的氢原子组成，其中一边是共价键，另一边是离子键。

A chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond .

一种化学键：由两个负电原子及其间的氢原子组成，其中一边是共价键，另一边是离子键。

A compound containing nitrogen with another more electropositive element, such as phosphorus or a metal .

氮化物一种含有氮和另外一种更具正电性元素的化合物，如磷或金属的化合物

The results show as follows:(1) Elodea nattalii and Hydrilla verticillata have strong capacity of purification on nitrogen and phosphorus , etc.

在实验室条件下。对伊乐藻及轮叶黑藻净化养鱼污水的能力进行了比较研究。

In an experimental enclosure system, floating plant Eichhornia crassipes was planted in summer and submersed plant Elodea nutalli was planted in winter to reestablish water ecosystem, and to investigate the effects of the hydrophytes on the removal of nitrogen and phosphorus from polluted water body and the improvement of water transparency.

在实验围隔系统中，夏季利用凤眼莲、冬季利用耐寒型沉水植物伊乐藻等恢复水生生态系统，研究水生植物对水体氮、磷营养盐、透明度等理化性质的影响。

Meanwhile due to long-time volatilization, eluviation and transformation, most of the petrol pollutants were hydrocarbons with macromolecule and high boiling point; and the contents of the efficient nitrogen and phosphorus were very low, which made the bioremediation more difficult and became influence factors adverse to the bioremediation.

同时，长期的挥发、淋失和转化造成土层中石油污染物主要由高分子、高沸点烃类组成，且油污土层的速效氮、速效磷含量太低，直接增加了生物修復的难度，成为不利於生物修復的影响因素。

MethodsThe rat chronic renal failure model induced by feeding adenine was used to investigate rat blood urea nitrogen, creatinine, amount of emiction within 24 h, urinary protein and pathological reaction of nephridial tissue by means of comparing the blank control, negative control, positive control with the Cordyceps minlitaris stroma of CRF rats.

方法采用饲喂腺嘌呤诱导大鼠慢性肾衰模型，观察比较了空白组、阴性对照组、阳性对照组和蛹虫草子实体组CRF模型大鼠血尿素氮、肌酐、24 h尿量、尿蛋白

In order to optimize the parameters of dielectric barrier-discharge plasmas, the emission spectrum of second transition line of oxygen and nitrogen under normal temperature and pressure was measured with a grating spectrometer.

为了对绝缘阻挡放电等离子体进行参数优化，以常压DBD等离子体为研究对象，在常温常压下使用可见光光栅光谱仪对等离子体发光光谱进行了诊断，得到了N2和O2的第二正带跃迁谱线。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。