both varieties of the melt and the test temperature show a remarkable effect on the apparent reaction rate constant, k 1, but the partial pressure of the ammoniacal nitrogen did not give any effect on k 1.

all additives except for urea can inhibit the production of ammoniacal nitrogen, butyric acid and the decomposition of protein during silage secondary fermentation, but the effects on ph were differing.

除尿素外的所有添加剂处理均可抑制青贮二次发酵过程中氨态氮的产生，抑制蛋白降解及丁酸的产生，但对pH值的影响效果不一。

as a result, rational contents of acidity, ammoniacal nitrogen, humus and efficient phosphor were realized. besides, appropriate temperature and sealed culture were emphasized and culture management should be strengthened.

酸度、氨态氮、腐殖质、有效磷等的含量适合，采用适宜的培养温度和密封条件培养并加强管理。

under the draft law, the tax will be levied based on emissions of sulfur dioxide, nitrogen oxides, dust and ammoniacal nitrogen, as well as chemical oxygen demand.

根据立法草案，税收的征收以二氧化硫、氮氧化物、灰尘、氨态氮以及化学需氧量的排放为依据。

a yellow colour indicates the presence of ammoniacal nitrogen. measure the transmittance of the solution by a spectrophotometer and compare the result with the standard curve.

若出现黄色即表示有氨态氮存在。用分光光度计量度混合液的透析度并与标准曲线作比较。

the present method is reproducible with recovery of 86~ 95%, and applicable to the determination of ammoniacal nitrogen in natural waters.

测定了天然水中氨氮，回收率为86～95%。

the paper describes ammoniacal nitrogen plate testing method based on the principle of nessler colorimetric comparison is designed and suitable for initial screening.

本文介绍了以纳氏比色法原理设计的一种适用于初筛菌种的氨氮平板测定方法。

results showed, all additives except for urea significantly improved the fermentation quality of alfalfa and decreased ph and ammoniacal nitrogen content.

结果表明：所有添加剂（除尿素）处理均能明显改善苜蓿青贮的发酵品质，降低青贮料的pH值、氨态氮含量。

determination of ammoniacal nitrogen by reagent colorimetric method

纳氏试剂比色法测氨氮空白试验值的探讨

test and study on eliminating ammoniacal nitrogen in make-up water for circulatory cooling water in thermal power plant

循环冷却水补水氨氮去除方法的试验研究

rapid determination of ammoniacal nitrogen in silage by automatic kjeldahl apparatus

自动凯氏定氮仪快速测定青贮饲料中的氨态氮

the study of action and mechanism of treating ammoniacal nitrogen with activated zeolite in groundwater

沸石去除地下水中氨氮的影响因素分析及作用机理探讨

summarization on the removal approaches of ammoniacal nitrogen in drinking water

饮用水氨氮的去除方法综述

absorption of nitrogen by iron and steel melt under ammoniacal nitrogen atmosphere

氨氮气氛下铁钢熔体的吸氮反应

fertilizers determination of ammoniacal nitrogen content titrimetric method after distillation

GB/T3595-1983肥料中氨态氮含量的测定蒸馏后滴定法

structural principle and product design on modern jacquard tricot machine (series)

现代贾卡经编机结构原理与产品设计（续）

in order to increase proportion of equiaxed grain of billet and refine the solidification structure, physical analogue and casting experiments have been carried out with 30% nh_4cl aqueous solution and ferritic stainless steel respectively.

为了提高铸坯的等轴晶率、细化凝固组织，以30%氯化铵水溶液和铁素体不锈钢为研究对象，分别进行了物理模拟和浇注实验。

the research of percolation mechanism and application about gas storage shows that the first improved physical analogue method to research percolation mechanism of establishing gas storage in high water saturation late oil field has high theory exploration sense and application value.

通过建库渗流机理及应用研究表明，首次提出的物理模拟方法研究高含水后期油藏改建储气库渗流机理具有较高的理论探索意义和应用价值。

due to the physical-chemical coupling process of ore-forming fluid system, the multi-angle and synthetic studies, including qualitative generalization, numerical simulation and physical analogue, should be carried out.

由于成矿流体系统的形成与演化是一个物理&化学作用耦合的复杂过程，所以其研究亦是复杂性科学与地球科学多学科交叉、定性概括和定量模拟及物理模拟多手段并用的综合探索。

analysis and computation show that the improved increasing coefficient model and physical analogue model are suitable to the prediction of large scale railway origin destination traffic volume distribution.

分析及实际计算表明，改进后的增长系数模型和物理类比模型较适合于大规模铁路区域OD流分布预测；

based on kinematic character of reflected wave of vertical slit model, this paper analyzes the result of numerical and physical analogue.

本文在建立垂直裂缝反射波运动学数学模型的基础上，对垂直裂缝模型进行了数值模拟和超声波物理模拟，对其结果作了综合讨论和分析；