查询词典 nitrate

The results showed:Under the same fertilizer consumption,covered with straw and covered with film can increase the chlorophyll content and total leer area duration of the maize,can improve leaf nitrate reeducates activity,Photosynthesis and roots vigor,and the nitrate reeducates activity,the chlorophyll content and the roots vigor present positive correlation with yield. Meanwhile,average dry matter accumulation of straw-covered increased 7.1% than this of no-ploughed,yield increased 15.3%.The average dry matter accumulation of film-covered increased 20.1% than which of no-ploughed and 12.1% than which of plough and covered with straws.And yield increased 26.8% and 10.1%,notable differences.

结果表明：在相同的肥料用量条件下，秸秆覆盖和薄膜覆膜对玉米生长发育具有良好的促进作用，能显著增加玉米叶片叶绿素含量和光合势，增强叶片硝酸还原酶活性和根系活力，同时玉米叶片硝酸还原酶活性、叶绿素含量、根系活力等与最终籽粒产量呈正相关；秸秆覆盖比免耕全生育期平均单株干物质积累量增加7.1%，籽粒产量增加15.3%，薄膜覆膜分别比免耕和翻耕残茬覆盖全生育期平均单株干物质积累量增加20.1%和12.1%，最终籽粒产量增加26.8%和10.1%，差异显著。

The result indicated:(1) N was the main factor in nitrate accumulation, and the nitrate content of water spinach significantly increased with the rising of N fertilization amounts.

结果表明：(1)N肥是蕹菜硝酸盐积累的主要因素，随着氮肥施用量的增加植株体内硝酸盐含量显著增加。

In this paper,it explained the compositions,sources and dangerous of nitrate and nitrite in the vegetables , showed the mechanism of nitrate and nitrite accumulation,the influence factor , controlling measure in the vegetables on the literature investigation and study foundation.

本文对蔬菜中硝酸盐和亚硝酸盐的来源、危害以及蔬菜中硝酸盐和亚硝酸盐的累积机制、影响因素、控制措施等方面在文献调研的基础上进行了科学的阐述。

Shipped products have to do: Safety matches, barium nitrate, sodium nitrate, sodium sulfite, cleaning agents, polyurethane, trichloroisocyanuric acid, sulfur dioxide, etc.

运做的产品有：安全火柴，硝酸钡，硝酸钠，亚硫酸钠，清洗剂，聚氨酯，三氯异氰尿酸，二氧化硫尿等等产品。

In this study, the characterization methods of barium nitrate were investigated by inductively coupled plasma atomic emission spectrometry, Flame Atomic Absorption Spectroscopy, and Ion Chromatography to detect the concentration of barium in powder and estimate the concentration of barium nitrate.

本研究利用热板加热消化发射药，并以硫酸钡沉淀法、感应耦合电浆发射光谱仪、火焰式原子吸收光谱仪及离子层析仪检测发射药中钡含量进而推算其硝酸钡含量。

A harmonic of Nd:YAG laser (532nm) pumped barium nitrate crystal in external resonator and excited stimulated Raman laser. Experimental setup adopted the Raman shifter consisted of external cavity and two prisms spectrometer. The external cavity was composed of diachronic mirrors with optimal reflectivity for Stokes components. Barium nitrate crystal was grown by the aqua-solution cooling method with the size of 48mm×10mm×10mm.

采用单端泵浦的外置拉曼振荡腔与双棱镜分光装置进行了硝酸钡晶体拉曼激光实验，泵浦源为倍频Nd：YAG的532nm激光，硝酸钡晶体通过水溶液降温法生长，尺寸为10mm×10mm×48mm，采用特殊镀膜的腔镜对各阶斯托克斯光进行优化选择。

Ferric nitrate and cupric nitrate can catalyze carbonization process. It is discovered that the catalyst dispersion on alkaline surface is poor through catalyst adsorption study.

对单元催化炭化过程的研究发现，铁、铜的硝酸盐对炭化过程有催化作用，能够减缓炭化过程中挥发份的最大析出速度，有利于各向同性炭前驱体的形成。

Cerium dioxide ultrafine powders were prepared by electrochemical method using composite coating of Ru, Ir and Rh as anode, and Cerium nitrate and ammonium nitrate as electrolyte.

采用钛基钌铱铑复合涂层作为阳极，以硝酸铈和硝酸铵作为电解液，电化学法制备二氧化铈超细粉体。

The expression of autotrophs growth kinetics indicates that autotrophs maximum growth rate can be determined by analyzing the varying trend of nitrate nitrogen concentration with time changing under conditions of lower initiative nitrate nitrogen concentration and autotrophs concentration.

自养细菌增长动力学表达式表明，在较低的起始硝态氮浓度和自养细菌浓度条件下，通过分析硝态氮浓度随时间的变化趋势，可以确定自养细菌最大增长速率。

The main contents and conclusions are as follows:(1) Synthesis of 1,6-hexamethylenedicarbamate catalyzed by yttrium nitrate Yttrium nitrate was employed as the catalyst in the synthesis of 1,6-hexamethylenedicarbamate from alkyl carbamates.

主要内容和结论如下：(1)硝酸钇为催化剂合成1，6-己二氨基甲酸酯采用硝酸钇作为小分子氨基甲酸烷基酯和1，6-己二胺合成1，6-己二氨基甲酸酯的催化剂。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。