硝酸

A white, gray, or colorless mineral of potassium nitrate, KNO3, used in making gunpowder.

硝酸一种白色、灰色或无色的硝酸钾kno3，用于制火药

Industry said that China is a large agricultural country, only the tobacco industry, the annual demand of agricultural potassium nitrate reached more than 200,000 tons and the majority rely on imports of agricultural potassium nitrate supply and demand very prominent contradictions.

业内人士表示，中国是一个农业大国，只有烟草业，农业钾硝酸的年需求量达20多万吨，多数的农业硝酸钾供应和需求依赖进口的矛盾十分突出。

In this thesis the law of the forming of nitrite in the process of pickling of potherb mustard had been studied in detail.

试验详细研究了雪里蕻腌制过程中亚硝酸盐的形成规律，通过试验找出了亚硝酸盐的形成与雪里蕻腌渍液的食盐浓度、温度、酸度、含糖量及杂菌污染的关系，为在生产中有效降低腌制雪里蕻产品中亚硝酸的含量提供了理论依

Methods: Panax ginseng and Panax ginseng fruit were grinded into powder, placed in the flask and pretreated with the solution of HNO3-HClO4 (4:1) on the electric heat plate. The contents of Zn, Cu, Mn, Fe, Ca, Mg, Cd, K and Na were determined by flame atomic absorption spectrometry.

将人参和人参果粉碎后置于锥形瓶中，分别在电热板上经硝酸－高氯酸(4：1)消解体系小火加热消解后，采用空气－乙炔火焰原子吸收光谱法测定。

The geometry of propyl nitrate was fully optimized using the B3LYP method of density functional theory and the standard 6-31G* basis set.

采用B3LYP方法、在631G基组水平上，优化了硝酸丙酯单体的平衡几何构型，计算了分子中各键的离解能。

Based on the experimental results,di-butyl-peroxide,di-cyclopentadiene and propyl nitrate are found to be sensitive to the change of heating temperature and heating time,and their thermal decomposed products can be detected easily.

实验表明，在343～473 K温度范围内，过氧化二叔丁基、双环戊二烯和硝酸丙酯对受热温度和受热时间的变化较为敏感，热分解现象明显，热分解产物易于检测。

Condusion:The method of compound mutagenesis of HNO_2 and UV of protoplast for screening of...

亚硝酸与紫外线复合诱变原生质体是一种很好的诱变方式。

Study showed that a mixture of Pyroxylin and alloy powder and acetone,which was deposited on the substrate, can help to form a high performancecoating.

工艺实验结果表明，用一定量的硝酸纤维素和 MCrAlY 合金粉末混合后，用丙酮调成糊状，涂覆于基材表面的方法，在后续的激光熔覆中能形成高质量的 McrAlY 抗氧化涂层。

Methods The colloidal gold labeled with protein A of S taphylococcus aureus, contected with the polysaccharide antigen of Yersinia pestis to pyroxylin membrane and assembled them to the dipstick of ICA.

采用柠檬酸三钠还原法制备胶体金颗粒，标记金黄色葡萄球菌A蛋白作为探针，同时用鼠疫多糖抗原致敏硝酸纤维素膜，共同组装成基于免疫层析原理的胶体金法快速诊断盒。

Methods Deoxidize method of the trisodium of citrate was used to prepare colloid golden pellet,and label Staphylococcus aureus protein A;Using the soluble antigen of Mycoplasma pneumoniae to sensitize pyroxylin membrane,then prepare immuno- chromatographic diagnosis test paper used in clinical serum specimen detection.

方法采用柠檬酸三钠还原法制备胶体金颗粒，并标记金黄色葡萄球菌蛋白A；用支原体肺炎可溶性蛋白抗原致敏硝酸纤维素膜；组装成免疫色层析法诊断试纸，用于临床血清标本检测。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。