前驱

The research on coking during the pyrolysis of coal to acetylene in the plasma (1) In the arc plasma jet, different kind of coal has different coking character. The aromatics, colloids, asphaltene and Carbenes are the precursors of the cokes.(2) The mostly reasons of coking in the plasma reaction equipment are the particle size, the feeding velocity, the power of plasma and the structure of equipment.

五、煤等离子体热解制乙炔装置结焦性研究的结果(1)在电弧等离子体射流的条件下，煤种的结焦能力不同，煤中的芳香分、胶质、沥青质和碳青质是结焦前驱体。

The nanostructure TiO_2 powders co-doped with Fe and N were composed of anatase and showed light-yellow in color.

以硫酸氧钛为前驱体，硝酸铁和盐酸胍作为掺杂的铁源和氮源，采用水热法制备了铁氮共掺杂纳米TiO_2粉体。

In this paper,the SMO-type lithium ion sieve was the main research object,the manganates and lithium salts were taken as the main raw materials.Two LISs with high uptake capacity,better selectivity and stable structure were successfully prepared by hydrothermal method and coprecipitation method based on the discussion of correlation between Li+ uptake performance and the preparation conditions of LIS precursors.The effects of preparation conditions on Li+ uptake were also investigated.

本文以SMO型锂离子筛为研究对象，以锰盐和锂盐为主要原料，在采用固相法探讨离子筛前驱体制备条件与离子筛提锂性能关系的基础上，分别采用水热法、共沉淀法为主要合成方法，成功制备了具有高提锂容量、选择性好及结构稳定的两种锂离子筛材料，并研究了合成条件对材料制备及提锂性能的影响。

On most FWD cars, the final drive is located within the transaxle.

而在大部分前驱的车上，最终驱动机构与驱动桥装在了一起。

Some current FWD cars mount the engine and transaxle longitudinally.

现在还有些前驱车辆将发动机和驱动桥纵向布置。

Different from the primary pyrolysis procedure of pyrrole with the complex tautomers the initial precursors of the major pyrolysis products are simple and the corresponding pathways are more distinct.

与吡咯热解初期的形成的复杂异构体不同的是，吡啶热解的主要产物前驱体相对单一，热解产物为母体脱氢的吡啶自由基、母体脱氢开环链状自由基和母体直接开环的产物。

In order to obtain the processing parameters of high speed depositing nickel film, experiment was undergone by metallic organic chemical vapor deposition with nickel carbonyl as precursor.

为了获得高速沉积镍膜的工艺参数，以羰基镍 [Ni 4 ]为前驱体，用金属有机物化学气相沉积法进行试验，以SEM ，DSC ，XRD测试分析技术探讨了载气、温度和羰基镍的摩尔分数对沉积速率的影响；也探讨了温度及羰基镍的摩尔分数对镍膜微观形貌的影响。

Noble metal precursors, which are connected with the PM dispersion and stability of catalyst, have directly effect on the catalytic activity and durability of catalyst.

贵金属前驱体与贵金属在催化剂上的分散性和稳定性有密切的关系，直接影响催化剂的催化活性和耐久性。

The cubic nanopowder of barium titanate was obtained when the precipitate was washed, stoved, and then calcined at 600 ℃ for 1 h.

将该前驱体沉淀洗涤、烘干，600℃煅烧1h，可制得立方相的纳米钛酸钡粉体。

The effect of the concentrations of precursor and propylene oxide on the gelation time is investigated, and the suitable conditions have been determined for the preparation of coating sols.

通过考察无机盐前驱体和环氧丙烷的浓度对凝胶时间的影响，确定了适宜的工艺条件。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。