Still the cheapest means of industrial nitrogen fixation, it is a basic process of the chemical industry.
哈伯－博施法是最经济的固定氮方法，是一种化工基本方法应用。
Still the cheap est means of industrial nitrogen fixation, it is a basic process of the chemical industry.
哈伯－博施法是最经济的固定氮方法，是一种化工基本方法应用。
Know one physical and one chemical method of fixation of dyes.
知道两种固色的方法。
On the presentation of Mn-P fixation, this paper reviews the latest advances in recent 10 years and concentrates on the mechanism of phosphorus fixation in acid soils. In addition, it brakes through the classical inorganic P fractionation in to Fe-P, Al-P, O-P and Ca-Pin the traditional P classification and considers Mn-P as one of the main phosphorus fixation modes in latosols, cultivated from the parent basalt material. Furthermore, fixation of P by Fe, Al, Mn is compared, and differentiation from chemical availability and bioavailability of P discussed. Based on the above, this paper presents some alienable measures for enhancing P utilization efficiency and postulates pivotal future research directions in the field of P fixation.
本文以Mn-P的提出为出发点，论述了近10年来对酸性土壤固磷机理研究的新进展，突破了常规P素形态分级研究中分为Fe-P，Al-P，O-P和Ca-P等无机磷测定的经典分级，认为玄武岩母质砖红壤中的Mn-P是P素固定的主要形式之一，进而比较了Fe、Al、Mn对P固定作用，并从P的化学有效性与生物有效性差异等方面进行了比较全面的论述，提出了减少P素固定提高磷肥利用率的措施及今后的重点研究方向。
Photocatalytic reaction involves many different types of chemical reactions, such as alcohol and hydrocarbon oxidation, redox inorganic ions, organic catalytic hydrogenation and dehydrogenation, amino acids, nitrogen fixation reaction, water purification, the water-gas shift, some of heterogeneous catalysis is hard to achieve.
光催化反应涉及到许多反应类型，如醇与烃的氧化，无机离子氧化还原，有机物催化脱氢和加氢、氨基酸合成，固氮反应，水净化处理，水煤气变换等，其中有些是多相催化难以实现的。
An experiment about a new-style slow release nitrogenous fertilizer was carried out in bashang plateau region. Through the experiment, I study the highly effective fertilization, the highly effective rational exploitation and the safe utilization of nitrogen resources for raising the nitrogen use efficiency, reducing the amount of nutrient out flow, the waste and the pollution, enhancing the crop yield and quality. This paper studies nitrogen fixation by legumina crops which planted on the dry and infertile sand by the selection of legumina crops which can enhance the soil fertility, improve the soil nutrient condition and reduce the amount of chemical fertilizer application.
本研究以高效施肥、高效合理的开发和安全利用氮素资源为目标，通过新型缓释氮肥的研究，提高氮素利用率，减少养分流失、浪费和污染，提高农作物产量和品质；通过优质豆科作物的选种，研究其在旱沙地上种植的固氮量，以提高土壤肥力，改善土壤养分状况，减少化肥施用，从而达到用地养地相结合，实现旱薄沙地豆科固氮与作物高产稳产，生物资源优化配置与自然资源合理开发利用。
This Paper outlines the fundamental chemical reactions of the fixation process of the silver halides emulsion layer of photographic materials and the composition of rapid access fixer of laser phototypesetting film, the function and behavior of its constituents, and also directions for its proper use, e.
本文阐述了感光材料卤化银乳剂层定影过程的基本化学反应和适用于激光照排胶片的高温冲洗套药中的定影药液的组成，其作用和配比以及使用时的注意事项，如：胶片定影容量与定影液的使用寿命、定影的浓度、定影温度、定影时间、药液的搅拌与循环、定影液的消耗与补充、水洗与影像质量、定影液的保存和定影过程的正确操作等等。
Application of erfc in fixation process of laser printer and numerical solution; 2. This Paper outlines the fundamental chemical reactions of the fixation process of the silver halides emulsion layer of photographic materials and the composition of rapid access fixer of laser phototypesetting film, the function and behavior of its constituents, and also directions for its proper use, e.
本文阐述了感光材料卤化银乳剂层定影过程的基本化学反应和适用于激光照排胶片的高温冲洗套药中的定影药液的组成，其作用和配比以及使用时的注意事项，如：胶片定影容量与定影液的使用寿命、定影的浓度、定影温度、定影时间、药液的搅拌与循环、定影液的消耗与补充、水洗与影像质量、定影液的保存和定影过程的正确操作等等。
Studies on Chemical Fixation of CO_2 and Syntheses of Alkylene Carbonates
CO2的化学固定及碳酸亚烃酯的合成研究
The antiseptic and fixation effect of 12 chemical agents and the fresh Lumps of the muscular tissue were observed and compared.
通过观察，对比和组织学方法，本文对十二种具有防腐固定作用的药物（单方），对新鲜肌组织块的防腐固定作用进行了观察和对比。
The paper reviews home and overseas research works on exhumation and use of nitrogen-fixing resource, genetics engineering of nitrogen fixation, and biochemistry of nitrogenase and chemical modeling of biological nitrogen fixation, and describe the prospect of biological nitrogen-fixing research.
本文从固氮资源的发掘和利用、固氮的遗传工程以及固氮酶生物化学和化学模拟生物固氮三方面对国内外的研究进展进行了全面的阐述，并对生物固氮研究的前景进行了展望。
The fixation of phosphorus in soil, is showed by two important function: The first is the sediment function of phosphorus chemical compound.
土壤中磷的固定表现为两个重要作用[25]：一是磷化合物的沉淀作用；
The results showed as follows: 1. The field experiment shows: ① Rape and being green dressing could activate phosphorus and alleviate chemical fixation of P fertilizer and evidently increased the content of rapidly available phosphorus in soil.
田间试验结果显示：①油菜种植并压青可以活化土壤磷和减少施入磷肥的被固定，极显著地提高土壤速效磷含量；
Photosynthesis, which involves energy of light, absorption, energy conversion, electron transfer, ATP synthesis, CO2 fixation etc., is a complex physical and chemical reaction process.
光合作用涉及光能的吸收、能量转换、电子传递、ATP合成、CO2固定等一系列复杂的物理和化学反应过程。
Chemical Fixation of Metals in Soil Using Bone Char and Assessment of the Soil Genotoxicity
骨炭修复重金属污染土壤和降低基因毒性的研究
And the influence of calciferous waste material chemical constitution on their calcinations and sulfur fixation performance were discussed, which provided theoretics bases for on second analysis on sulfur fixation mechanism of calciferous waste material.
并对含钙废弃物的化学成分对其煅烧特性和固硫活性的影响进行了探讨，为进一步分析含钙废弃物的脱硫机理提供理论依据。
Effective approaches of producing reactive dyeing with high fixation and the feasibility of nearly 100% chemical combination between dye and fiber by crosslinking dyeing were studied.
论述了实现高固色率活性染料的有效途径以及通过交联染色方法实现染料与纤维近100%化学结合的可行性；
Synthetic polymer material is a kind of new chemical sand-fixation and dust suppressants.
论文研制的固沙抑尘剂材料是一种水溶性良好的丙烯酸酯高分子化合物乳液。
Study on Chemical and Physical Properties of Fixation Tea Leaf Extracts
绿茶杀青叶浸提物理化特性研究
To compare the different characteristics of skeletal muscle ultrastructure after conventional chemical and cryo fixation.
比较冷冻和化学固定后骨骼肌超微结构的不同特征。