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And they end up predominantly in the fine particle fraction in the fly ash duringcombustion.When biomass sample is pretreated by using chemical fractionation method,the content of volatile alkali in fuels decreases clearly and large amount of available C1 andS is also leached.So,during combustion the vaporization amount of alkali reduces and theformation of fine particle fraction in the fly ash is limited.

而当样品在经水洗分离和酸洗分离的化学处理后,燃料中易气化部分的碱金属元素含量大幅减少,大量水溶态或酸溶态的S,Cl等非金属&催化性&元素同时也被分离脱除,从而导致燃料样品燃烧时的碱金属气化量下降,且在成灰过程中向细微颗粒转化的途径也受到较大的抑制。

The ethylene producing process includes: distilling 5-45 % concentration ethanol solution to obtain mixed ethanol-water vapor, heating the mixed ethanol-water vapor to 150-350 deg.c, catalytic reaction in a gas-solid reactor to obtain coarse ethanol product, cooling, gas-liquid separating to eliminate components with boiling point higher than 70 deg.c and obtain ethylene gas, and washing, drying and refining to obtain ethylene product.

其特征是将乙醇蒸馏和化学催化制乙烯工艺过程耦合,浓度为5~45%乙醇经蒸馏系统得到乙醇-水混合蒸气,该乙醇-水混合蒸气继续加热到150~350℃后进入气-固催化反应器中经催化剂作用得到产物为粗乙烯,粗乙烯冷却后,使用气液分离装置去除其中沸点大于70℃组分得到乙烯气体,乙烯气体依次通过洗涤、干燥和精制得到乙烯产品。

It mainly controls the dilution of original chemical and the transfer to the Day Tank.

主要控制将原化学试剂稀释并移入日箱的过程。

Valve in operation, the friction surface at the same time as a result of mechanical action and Metals and the Environment to carry out chemical or electrochemical interaction of wear and damage results.

阀门在操作过程中,摩擦的表面由于同时的机械作用和金属与环境进行化学的或电化学的互相作用的结果产生磨损和破坏。

The molecular motion of amorphous region at high-frequency was found to be hardly affected during the stretching processes. In summary, elongation has created major but different influences on the morphology and molecular motion of the aforementioned four series of polymeric elastomers. For those elastomers like natural rubber and poly , elongation has induced crystallization of the noncrystalline or the soft segments. The crytallinitiy and the crystal thicknesses increase monotonously during the course of the stretching; On the other hand, the stretching processes for those semicrytalline copolymers like EMA and POE are rather complex, including the formation of crystal at relatively low λand the destruction of the crystal at the utmost λ. It revealed that stretching process has resulted in a decreasing of the thicknesses and a shortening of 〓C T〓s for the orthorhombic crystalline components.

拉伸对上述四个弹性体体系的聚集态结构都产生了很大影响,但是影响的程度和内容因体系而不同,对于本身存在着化学交联或者是物理交联的体系而言,拉伸导致了其中本来难以结晶组分的结晶,且结晶度随着拉伸比增加而增加,与此同时,体系结晶的晶片厚度也会逐渐增加;而对于结晶性共聚物体系,如EMA和POE,结晶区本来起到了物理交联的作用,在这种情况下拉伸的影响变得比较复杂,拉伸对于不同晶型的影响有所不同,在拉伸比较低的情况下体系总体的结晶度会有所增加,说明有新的结晶产生,当接近或达到断裂伸长比时,体系的结晶度会突然降低,含量占优的结晶会被拉伸所破坏,含量较低的结晶在整个拉伸过程中受的影响较小。

PTFE referred to F4, because of its excellent dielectric properties and corrosion-resistant chemical (high temperature of the molten fluoride elements and the state of alkali metal), non-absorbent, non-stick, not conductive, low coefficient of friction and not Ageing properties, and is widely used in chemical, petroleum, textile pharmaceutical, metallurgy, machinery, electronics, electrical appliances, electricity, food and aviation, military and scientific research in all walks of life, I plant the development of metal bellows, compensation , PTFE bellows F4 tetrafluoroethane compensator, F4 metal composite compensation, anti-corrosion steel liner tetrafluoroethane pipe, steel-lined tetrafluoroethane three links, elbow, Stone, the reaction tower, tower chloride, lining tetrafluoroethane valve Doors, tetrafluoroethane pads and steel-lined polypropylene pipes and accessories, and earnestly solve the user in the production process by the various anti-corrosion problems.

聚四氟乙烯简称F4,由于其优异的介电性能与耐化学腐蚀性(高温下的氟元素和熔融状态下的碱金属外),不吸水、不粘、不导电、摩擦系数低及不老化等性能,而被广泛应用于化工、石油、轻纺制药、冶金、机械、电子、电器、电力、食品及航空、军用与科研等各行各业中,我厂开发的金属波纹管、补偿器,四氟波纹管F4四氟补偿器、F4金属复合补偿器,钢衬四氟防腐管件,钢衬四氟三通、弯头、四通、反应塔、氯化塔、衬四氟阀门,四氟垫片以及钢衬聚丙稀管道及配件,切实解决了用户在生产过程中所遇到的各种防腐问题。

The problems of the heat transfer equation of cloud drop growth were analyzed from chemical potential and principle of phase equilibrium of multi-component system. It was pointed out that Clapeyron equation was the result gained under the condition of rigid phase equilibrium. It only shows the linear relation between steam press and temperature at saturation state, and does not show that there is any thermodynamic process which can meet this equation.

基于多元体系化学势和相平衡原理,分析了云滴长大热传导方程存在的问题,指出克拉伯龙方程是严格相平衡条件下推导出的结果,仅表示饱和状态下蒸汽压与温度之间的线性关系,并不表示存在满足克拉伯龙方程的热力学过程。

It is: controls to compose nanometer metal silver grain with different size and different shape by processing; uses chemical combination technology to fixing the nanometer metal grain on the different underlay surface, in order to get the nanometer anti-bacterium coating, which can achieve the control of equipment and the micro-biomembrane of packaging inner surface.

通过过程控制合成了不同粒度不同形貌的纳米金属银颗粒。并采用化学结合技术将纳米金属颗粒固着在不同的衬底表面,获得固着性、长效作用的纳米抗菌涂层,实现了食品生产设备和包装内表面微生物膜的控制。

According to the power relation between the bulk modulus of a gel and the density, we have studied the gel' shrinkage rule during drying with the surface-chemical theory.

根据前人提出的凝胶网络的弹性模量与密度之间成幂律关系,应用表面化学理论研究了凝胶干燥过程中的收缩规律。

We stick to combination between qualitative estimation and quantify estimation. We stick to combination between students" self-estimation and other people"s estimation. We try to make estimation transverse the whole process of the study of school-based curriculum.

课程评价是课程编制的一个重要环节,在校本课程《化学与生活》中我们倡导评价目标的多元化和评价方式的多样化,坚持终结性评价和过程评价相结合、定性评价与定量评价相结合、学生自评互评与他人评价相结合,努力将评价贯穿于校本课程学习的全过程。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。