碳

Carburizer is a nonlinear system with time variation and distributed parameters and it is difficult to describe its characteristics by precise mathematic model.

文章摘要：渗碳炉是一个非线性、时变和分布参数的系统，用精确的数学模型表示其特性较为困难，将带有自整定功能的模糊控制算法引入传统的渗碳炉温度控制系统。

The samples of MgO-C brick with slag-splashed layer were obtained in taphole after slag splashing for 4 min.

研究了镁碳砖和铝碳砖在高钛渣中的侵蚀行为。

The phase made up of iron-carbon with a body-centered tetragonal structure is called martensite.

铁和碳以碳在体心立方晶格中过饱和的方式组成的相称之为马氏体。

It was experimentally verified that Mo-La2O3 cathode had higher thermionic emission effectiveness and lower operating temperature than Th-W tube.

Mo与 Mo2C 的界面高分辨晶格像直接显示了碳化层与基体界面结构，晶体取向关系为[210] Mo2C ‖[100] Mo ，碳化层与基体结合良好。

After active carbon powder and alloy steel powder are added to the thermit, the self-propagating high-temperature synthesis reaction starts.

本文研究了合金化自蔓延陶瓷内衬复合钢管制造技术，即在铝热剂中加入活性碳粉或合金钢粉末，进行自蔓延高温合成反应，分析了碳和合金元素对复合钢管过渡层的影响。

By the liquid-state fermentation, the best factors for cellulase from C. thermophile were investigated. The factors including carbon sources, nitrogen sources, the original pH of medium and varieties of pH and the protein concentration during the cultural process were tested .

采用液体发酵培养法，通过对碳源、氮源、培养时间、液体培养基的起始pH值及产酶过程中培养液中pH值和蛋白质含量变化的研究发现：在以2％纤维素、1％可溶性淀粉为碳源，2.0％KNO_3+0.2％酵母为氮源，液体培养基的起始pH值为6.5，50℃下液体发酵培养8d～9d后，各种酶活力最高。

The amphiphilic octadecylamine is attached by two different methods: one isby ways of reacting with thionyl chloride SOCl_2 the other is heating directly.

经酰氯化和直接加热反应两种方法，在单壁碳纳米管表面分别嫁接了十八烷基胺，获得了溶于有机溶剂的单壁碳纳米管。

CH3OH could attack the phosphor atom in 1,3,2-dioxaphopholane of compiound (1) to give O-methyl O-hydroxyethyl-O-phthalimidoethyl thiophosphate in 85% yield; in the presence of potassium hydroxide aryl selenol could attack the carbon atom in 1,3,2-diox-aphopholane of the cyclic phospholipid conjugate of N^1-(2-furanidyl)-N^3--5-fluorouracil to give the corresponding product of ring-opening in high yields.

在室温下，以异丙醇作溶剂，苯硒酚与化合物2不反应。在氢氧化钾存在下，以异丙醇／水作溶剂（体积比20：1，在室温下，硒酚可以有效地进攻中化合物2中1，3，2-二氧磷杂环戊烷中的碳原子生成相应的开环产物。按照这一反应条件，顺利实现了硒酚对N^1-（2-呋喃基）-N^3-羟烷基-5-氟脲嘧啶硫代环甘油磷脂缀合物的亲核开环，生成甘油骨架的端碳原子上带有芳硒基新颖的磷脂核苷缀合物。

Effect of fertilization on C content and storage of topsoil but of whole profile was recognized.

因此，与作物产量直接关联的作物碳输入的增加是土壤中碳固定提高的重要途径。

The increase of leaf ratio is favorable for carbon uptake and carbon balance in severe environment at treeline ecotone.

枝、叶生物量比例增加，特别是叶生物量分配增加有利于在树线恶劣环境的碳吸收和碳平衡。

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。