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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。

The main content included: separation, depuration and appraisal of pathogens ; healing effect of the penicillin fluid to scaling the wound of the rotten sickness and the penicillin fluid prevented pathogens infection; the appraisal of pathogens secreting Pectolase and its influence; and the influence of Penicillin fluid to resistance of tree body .

主要内容包括：腐烂病病原菌的分离、提纯、鉴定；青霉素液对腐烂病刮治伤口的愈合效果以及阻止病原菌的侵染；病原菌分泌果胶酶的鉴定以及青霉素液对其的影响；青霉素液对树体抗病性的影响。

In order to improve market competitiveness, firstly have to create the brand salience of "Dingwangtai", scaling operation, innovating administration mechanism, enhance cooperation with government,and deracinate piracy.

定王台已经成为全国四大图书批发市场之一，但仍存在盗版泛滥、同质化经营、政府管理失当、书城结构混乱等问题，要提高其竞争力，首先要创造"定王台"特色品牌，规模性经营、创新管理机制，加强与政府的合作，杜绝盗版。

The effect of preventing dental hypersensitiveness by using Green Or and Gluma desensitizer after subgingival scaling with ultrasonic instrument is ideal.

极固宁、Gluma脱敏剂对治疗龈下刮治后产生的牙本质过敏有着较为理想疗效。

Objective: To observe the clinical effects of Green Or, Gluma desensitizer and 75% sodium fluoride glycerin on the treatment of root-dentin hypersensitivity after subgingival scaling with ultrasonic instruments and discuss its desensitization mechanism.

目的：评价极固宁、Gluma脱敏剂、75%氟化钠甘油治疗超声龈下刮治所致根面牙本质敏感症的临床疗效，探讨其作用机制。

To 64 msec. in 4-msec. steps. A dual scaling method was carried out to analyze possible response differentiation as a function of exposure time.

一种双重缩放的方法被用於分析可能的回应区别，以作为一种显露时间的函数。

Beijing Institute of Technology, Beijing 100081,ChinaIn order to get the high output power, a RF excited diffusively cooled all-metal slab waveguide CO2 laser was reported, in which gas discharge region was constructed by two aluminum side walls and aluminum electrodes. The region dimension was 2 mm height×20 mm width×386 mm length, and the gas composition was CO2:N2:He:Xe=1:1:3:0.26. This technique replaced the old ceramic and metal sandwich waveguide technique.The optimum out power 127 W was achieved from the RF excited diffusively cooled all-metal slab waveguide CO2 laser with the longitudinal voltage uniformity distribution technique and scaling area technique. The electro-optic conversion efficiency was about 14%.

为了获得较高的激光输出功率，介绍了射频激励扩散冷却全金属板条波导CO2激光器，放电区域由左右两个铝合金壁和上下两个铝合金电极构成，放电区域高2 mm，宽20 mm，长386 mm，工作气体混合比CO2：N2：He：Xe=1：1：3：0.26，该技术代替了过去的金属陶瓷结构，结合纵向电压均匀分布技术和面增比技术，获得了127 W的激光输出功率，光电转换效率高达14%。

Dimensionless numbers and/or models for scaling also can be included as part of the design space description.

对于规模缩放无尺寸影响的数字和/或类型可被作为设计空间描述的一部分。

Unparticles as recently suggested by Georgi are identities that are not constrained by dispersion relations but are governed by their scaling dimension.

最近，Georgi建议了一种客体——非粒子，它不存在色散关系的约束，却受所谓的标度量纲控制。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了