多步的

On the basis of an analysis of several steps in synthesizing manganese iso-octoate ,a kind of paint siccative,the one-step direct synthesis method is put forward,in which barium hydroxide is used to replace sodium hydroxide,and all the materials are at once added in the same reaction process.

对漆料催干剂异辛酸锰的多步合成条件进行了分析研究，提出了用既是沉淀剂又是皂化剂的氢氧化钡代替氢氧化钠，同时投料，同时反应，一步直接合成目标产品的合成路线。

The paper first presents an objective model of task scheduling,and then based on the analysis of Q learning algorithm,the Markov decision process description of the scheduling problem is given.

首先建立任务调度问题的目标模型，在分析 Q学习算法的基础上，给出调度问题的马尔可夫决策过程描述；针对任务调度的 Q学习算法更新速度慢的问题，提出一种基于多步信息更新值函数的多步 Q学习调度算法。

The results show that the surface microphotograph yielded in multiple-step machining with slow feeding and in one-step compound process is satisfactory, and there are fewer defects, lower deformation and thinner metamorphic layers; while that produced in other processes is quite rough, there are more defects and bigger deformation on the machined surface, and they are detrimental to assembly properties and fatigue life of fastening holes.

结果表明，钻扩铰多步慢进给工艺和一步复合制孔工艺所加工出的表面，平整、光滑、加工缺陷少、晶格变形小、变质层薄；而其它工艺条件下，孔表面微观形貌复杂、加工纹路紊乱、表面缺陷多、晶格畸变大，变质层厚，这些加工状况，对紧固孔的装配性能和疲劳寿命都有很大的影响。

The methods of one-step prediction and multi-step prediction for deformation are also investigated.

重点讨论了变形序列的一步预测与多步预测的原理、计算方法和特点。

At last, the VNNTF networks learning algorithm is designed, and a single-step and multi-step prediction of traffic flow chaotic times series is researched by VNNTF networks, the VNNTF networks predictive performance is better than the BP networks and Volterra functional model by the simulation results and root-mean-square value.

最后，设计了VNNTF网络学习算法，利用VNNTF网络对交通流量混沌时间序列进行了单步和多步预测，与BP网络和Volterra模型的预测结果比较，取得了相当好的预测效果。

To simulate the steady removal VOC waste gas degradation parallel plat plates theoretical model, the result shows that the toluene removal efficiency curse can track the dentiform and sine wave reference curves and five-step predictive control can track reference curve closely compared with one step predictive control.

并对稳态的生物膜滴滤床降解甲苯净化效率的平行平板通道理论模型进行了多步预测控制的仿真研究，得到结果是，基于神经网络的预测控制能使得甲苯降解效率跟踪参考的齿形轨迹和正弦轨迹，五步预测控制较一步预测控制更能较好的逼近跟踪轨迹。

Chiral centers of C5 and C8 are directly constructed in the key step of the diastereoselective propargylation from D--tartrate. The methylation and subsequent methoxycarbonylation result in desymmetrization of the terminal dialkynes. The α,β-unsaturated δ-lactone is synthesized after partial hydrogenation and lactonization.

由非天然酒石酸出发，利用双向非对映选择性的炔丙基化反应，在一步反应中同时构建C5和C8手性中心；然后通过末端炔基的甲基化、甲酯基化，延长碳链并对分子去对称化；内酯化得到关键中间体α，β-不饱和六元内酯，再经多步反应转化得到8-epi--Boronolide。

It can be concluded from the time course of emission components during the photoinhibition that light-induced destruction of pigments is a multi-step reaction which confirms our previous reports.

从发射光谱组分的光破坏时间进程推断强光破坏过程导致的色素破坏是多步反应，验证我们小组原先报导的PSⅡ-RC的多步反应特性。

A self-containing model for the prediction of the production decline of a water flooded candstone oil reservoir is established by the application of a method of multilayer staged prediction (1) combined with the method of muleiple variables, multiple steps self-checking recurrence prediction (2) based on the analysis of the statistics of changes in the withdrawal rate in a seguence of time.

在分析研究系统的产量变化时间序列统计规律基础上，采用多层递阶预报和多变量多步自校正递推预报器，分别建立了水驱砂岩油田产量递减自适应预报模型。

The first step is important because it determines how high the starting point of the second step.

第一步很重要，因为它决定了第二步的起点是多高。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。