碳化的

Taking cave systems under different vegetation in guizhou karst area as study objects, this paper analyzes the spatio-temporal evolution of stable carbon isotope in karst cave system. Vegetation of Liangfeng cave, Qixing cave, Xiniu cave and Jiangjun cave are respectively origin forest, bosk, grassplot and rocky desertification.

本论文在贵州岩溶地区选择了上覆植被分别为原始森林、灌丛草坡、草坡和石漠化的凉风洞、七星洞、犀牛洞、将军洞作为研究对象，对岩溶洞穴系统稳定碳同位素的时空演化规律进行了详细的分析，得出以下几点认识：一。

4Pre-oxidization and carbonization of PAN/MWNT fibers A typical producing technology of carbon fibers was used to pro-oxidize and carbonize the PAN/MWNT composite fibers.

4对PAN/MWNT复合纤维进行了预氧化和碳化处理，得到MWNT改性的碳纤维，对复合碳纤维的形态结构与力学性能进行的初步探讨。

It is found that glassy carbon electrode modified with carboxylic acid group by carbon nanotube functionalized had more sensitivity in adsorption of lead.

试验发现，用羧基化的破纳米管修饰的玻碳电极作为工作电极，对铅离子吸附的灵敏度较高。

The paper also indicates that influence of vertical crack on reinforcement rustiness is smaller than lengthwise crack, concrete basicity, concrete carbonate and so on.

钢筋锈蚀是导致钢筋混凝土结构耐久性等级下降的主要原因之一，本文根据工程调查，分析了混凝土状况对钢筋锈蚀程度的影响，认为垂直裂缝对钢筋锈蚀的影响程度远小于纵向裂缝、混凝土碱度、碳化等其它因素。

In order to compare the tribological properties of two aluminum matrix composites reinforced by different content of B4C particles ,the pin samples were prepared with them and friction and wear tests of pin-on-steel disc were carried out on a multifunctional tribometer.

为了比较两种含量不同的碳化硼颗粒增强铝基复合材料的摩擦学性能，将其加工成销试样，在多功能摩擦磨损试验机上分别与钢盘试样进行对比摩擦磨损试验，重点研究了接触载荷和相对滑动速度对两种复合材料摩擦磨损性能的影响。

The chemical shifts of the carbon atoms connected with the nitrogen atoms in the protonated pyridines were moved upfield in comparison with those of the pyridines.

在质子化的吡啶中，与氮原子相连的碳原子的化学位移与吡啶相比移向高场。

The application of the wearproof surfacing welding technology with the tungsten-carbide rod melted by oxygen-acetylene flame to dies' surface reinforcement was introduced.

介绍了碳化钨条氧—乙炔火焰耐磨堆焊技术在模具表面强化中应用的工艺方法，同时提出了普通碳钢+焊接表面强化部分代替模具钢的方法，该方法在生产实践中取得了满意的效果。

Although the rising of cooking temperature and extension of heat preservation time will facilitate the delignification, it will also reinforce the damage to carbon compound, as well as low the pulp yield, hardness, intensity and bleachability.

但蒸煮温度的提高和保温时间的延长，虽有利于脱木素，但也加剧对碳化后物的损害，因此，成浆得率低硬度小物理强度小漂率也低。

The analysis is based on a T2shape girder of a highway bridge w ith co rroded reinfo rcement bars due to concrete carbonification.

以混凝土碳化引起的主筋锈蚀的公路桥T 型梁为例，计算了这3 种活载过程下的时变可靠度。

Considering the shielding effects of carbonous layer forming on the burning surface on the transmission of external irradiation, the burning characteristics of 1040, 1041, N -5 and N propellants were analyzed.

考虑到辐射在燃烧表面上形成的碳化层对辐射传递的阻碍作用，本文分析了1040，1041，N-5和N型推进剂的燃烧特性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。