查询词典 sampling interval

New type of water chemistry for utility drum boiler and its principle and characteristic Two kinds of water chemistry's main principle and characteristic are detailedly analyzed. Against the problem of high eroding speed, high Fe content in feed water and boiler water, high scaling speed, short chemical cleaning interval, needing poisonous chemical deoxidant, etc for drum boiler's deoxidization water chemistry and difficulty of using oxidation water chemistry, a new type of water chemistry is put forward on the basis of analyzing the characteristic of whole power station's water steam cycle system, principle of two kinds of water chemistry and their practical effect in every cycle stage. Considering two water chemistry's merit, a new water chemistry called Limited Oxidation Water Chemistry is put forward, which is a local slight oxidization no-deoxidant water chemistry. And the proposed method's principle, control parameter, applying condition, start-lay up and emergency measures are initially calculated and analyzed.

三、新型汽包炉水化学工况的提出及其原理和特点详细分析了国内外现行两大类水化学工况处理的核心原理和特点，针对现行汽包炉还原性水化学工况处理所存在的系统腐蚀速度相对较大、给水和炉水铁浓度高、锅炉结垢速度快、机组酸洗间隔短、无法避免有毒化学除氧剂的使用以及氧化性水化学工况在汽包炉机组上应用的困难等问题，在详细分析电站整个水蒸汽循环系统的特点、两类水工况处理的原理和对循环中各段处理的实际效果等的基础上，综合两者的优点，提出了一种新型的局部轻微氧化性无除氧剂汽包炉水化学工况－"汽包炉有限氧化性水化学工况"处理原理，并初步计算、分析和确定了该种新型水化学工况的主要工艺控制参数、应用条件、启停与紧急情况处理等。

But it is difficult to find a perfect method to control drum boiler's corrosion. Now deoxidization water chemistry for drum boiler has the characteristics of high corrosion speed, high Fe content in feedwater and boiler water, high scaling speed, short chemical cleaning interval and needing poisonous chemical deoxidant, etc.

火力发电站由于大量使用金属材料，并且金属材料的使用环境大都接近其极限使用条件，因而常由腐蚀而引发事故，造成重大损失。

About the problem of hypothesis testing for the problem of estimate interval,first of all,we set statistic and the distributions of the statistic.Fron this ,we derivate the methods of testing.

对于点估计问题，讨论了估计的优良性质；对于区间估计问题，讨论了估计的精度；关于参数的检验问题，首先建立检验用的统计量及其分布，由此导出检验的方法。

With IOMFP, the original optimization problem of LSSFP can be transformed into deterministic optimization problems by α—level set of fuzzy numbers, then the interval parameters are employed as coordination variables.

提出了大规模工业过程的智能化目标修正协调法，并给出了基于该方法的满意解定理和证明。

It has numerousdiastems and/or unconformities in the Ordovician-.Silurian-Devonian interval and there was 1500' of closure by the time the Devonian was deposited.

它有numerousdiastems和/或顶奥陶系-Silurian-Devonian间隔和有1500 '关闭的时候是泥。

Silurian-Devonian interval and there was 1500' of closure by the time the Devonian was deposited.

Silurian泥盆纪间隔和有1500年，关闭的时候，泥盆系沉积。

In the proposed method the data from state estimation or power flows during larger time interval is used to calculate nodal voltages and the initial value of current transitive-relationship matrix; the variation of diagonal elements of this matrix reflects the variations of the detailed models of system components, network topology and parameters after the perturbation, then by use of the PMU measured data in millisecond level the primary diagonal element can be modified.

该方法采用时间间隔较大的状态估计或潮流数据计算节点电压和电流传递关系矩阵的初值，并利用该矩阵主对角元的变化反映受扰后系统各元件的详细模型、网络拓扑和参数的改变，然后使用相量测量单元毫秒级的量测数据对其进行修正，从而为在实际应用中将相量测量单元与SCADA系统相结合做出了有益探索。

Parotid region skin shows vasodilatation, flush and diaphoresis in meal. The mechanism is aberration-regenerate theory. The treatments include drug treatment, local treatment and operation treatment. The obviate is to put interval stuff in operation, skin flap can prevent nerves wrong to unite on parotid raw surface. It can barricade insulate the wrong unite of parasympathetic nerve and reign skin interneural if insert apo-cell subcuticula ground substance in operation.

腮腺区皮肤在进餐时出现血管扩张、潮红、出汗现象，其机制为迷走再生学说，其治疗有药物治疗、局部治疗、手术治疗，预防主要是术中放置间隔材料，皮瓣在腮腺创面上防止神经错联发生；如术中植入脱细胞真皮基质，屏障隔离副交感神经与支配皮肤神经间的错联。

Objective To study the complex restitution relation between the present action potential duration and its previous diastole interval and APD.

目的研究当前动作电位时程的和先前心动周期中舒张间隔、APD之间复杂的恢复特性关系。

"An interval encompassing five diatonic tones, such as C, D, E, F, and G."

包含五个全音阶音调如C、D、E、F和G的时间间隔。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。