碳化的

In this novel cyclization, nucleophiles very regioselectively attack the internal C1′alkyne carbon of enediynes to give benzene derivatives as a single regioisomer.

在这新的环化，亲核攻击非常regioselectively内部C1'alkyne碳的enediynes给予苯衍生物作为一个单一的regioisomer 。

It is shown experimentally that graphite layers in CNT can grow and form annual ring structure with the better crystallization degree at high temperature.

实验结果及理论分析表明，高温下碳纳米管管壁中的石墨层片易于形成自组建的封闭结构，最终形成晶化较好的同心圆柱形结构。

It has been found that carburetting with graphite can efficiently prevent the surface crack of cast iron.

研究还证明，用石墨增碳可以有效地改善激光熔化区和合金化区的组织和性能，并且有效地防止裂纹的产生。

The watermelon sample was extracted with ultrasound,protein was precipitated with potassium ferrocyanide and zinc acetate,and the pigment was decolored with activated carbon,nitrate would produce yellow compound with phenonldisulponic acid on condition of base.

在超声器中提取西瓜样品，用亚铁氢化钾和乙酸锌沉淀蛋白，活性碳脱色素，酚二磺酸碱性条件下和硝酸盐生成黄色化合物，样品的硝酸盐检测结果有较好的准确度和精密度，能满足样品分析需要。

For the severe service-environments, such as high-pressures etc, the requirements for the properties of materials have reached the nano scales, and carbon nano-materials are used as reinforcements of the advanced composites increasingly.

由于结构可能处于高压等极端恶劣的服役环境中，对其材料性能的要求甚至达到微观尺度，故纳米碳材料在先进复合材料强韧化中应用广泛。

Company Business: all kinds of mold, tools, mechanical parts of the vacuum, quenching, deep cold, nitrogen, carburizing, quenching and tempering, annealing, burning black, high-frequency and other conventional heat treatment, cymbals aging copper, stainless steel type of Bright Quenching and tempering, hardness testing, materials analysis.

公司经营范围：各种模具、刀具、机械零件的真空、淬火、深冷、氮化、渗碳、调质、退火、煲黑、高频和其它常规热处理等，钹铜时效、不锈钢类的光亮淬火和回火、硬度测试、材质分析。

TiO2 prepared under low-temperature conditions had a better degradation effect to RhB and 2,4-DCP, which were significantly degradated in TiO2/UV(λ≤387 nm) system by analysing UV-vis spectroscopy, FTIR and TOC. After 5 h and 7 h the mineralized rate of RhB, 2, 4-DCP was 81.2%, 86.8%, respectively.

通过分析紫外-可见光谱、红外光谱和总有机碳测定，发现TiO2/UV体系能使RhB和2，4-DCP发生有效的降解，反应5 h后RhB和7 h后2，4-DCP的矿化率分别达到81.2%和86.8%。

Improvements According to the causes of valve casting defect, we are mainly taken from the following improvements:(1) appropriately increasing the iron liquid carbon equivalent expansion of the use of graphite materials to enhance the ability of self-feeding.

改进措施根据阀门铸件缺陷的成因，我们主要从以下几个方面采取了改进措施：(1)适当提高铁液碳当量，利用石墨化膨胀增强材质的自补缩能力。

Using this reaction, a three-component reaction to synthesize tetrahydrofuran derivatives was studied.

另外我们还对炔烃碳钯化启动的烯炔偶联反应进行了初步的探索。

Are set processing, production and sales of integrated enterprise, Main specifications of the dual-head models to stay plate Plum wrench, dual-purpose wrench (semi-parabolic / wide parabolic), active wrench (Zhanhua Plastic / Phosphating / calibration / chrome), a full range of instrument sets sleeve, the sleeve head, then a long shot, short take-under, ratchet wrenches, Freedom Next, slide the first handle rod afterburner, universal joint, the two sides bend Handle, Express±ú, large sliding head, curved handle, L-type wrenches, tire sleeve, saw blade, circular saw blades and other products, high-quality carbon steel and medium carbon steel.

山东世达机械工具有限公司是集加工，生产，销售为一体的综合性企业，主营各种规格型号的双头呆扳梅花扳手、两用扳手、活络扳手（沾塑/磷化/刻度/镀铬）、全系列套筒组套工具、套筒头、长接杆、短接杆、棘轮扳手，自由接、滑行头手柄、加力杆、万向接头、双方弯柄、快速摇柄、大滑行头、弯柄，L型扳手、轮胎套筒、锯条、圆锯片等一系列产品，产品选用优质中碳合金钢和中碳钢。

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。