所有开头是q字母的单词
Qualification n.资格，限定条件；合格证Qualitative a.质量上的，定性的，性质上Quality n.质量；品质，特性Quantitative a.数量的Quantity n.数量，量；[常pl.]大量，大宗Quarrel n.&vi.争吵，吵架Quarter n.四分之一；一刻钟；地区；(pl.)住处Quarterly a./ad.季度的/地 n.季刊Queen n.女王；(纸牌、国际象棋中的)王后Queer adj. 奇怪的Quench vt.扑灭，熄灭；止(渴)Quest v./n.探索，寻找，追求Question n.问题；待解决的问题；疑问 vt.询问Questionnaire n.调查表Queue n.队，列 vi.排队Quick a.快的，迅速的；敏捷的，伶俐的；性急的Quiet a.安静的；宁静的 vt.使安静 vi.平静下来Quit vt.离开，退出；停止，放弃 vi.离开；辞职Quite ad.完全，十分；相当地Quiver vi.微微颤动Quiz n.小测验；猜谜或问答节目 vt.进行测验Quota n.(生产、进出口等的)配额，(移民的)限额Quotation n.引语，语录Quote vt.引用；报价 vi.引用，引证q字母的单词表格截图：
产品用英文怎么写
product
product
KK: []
DJ: []
n.[C]
1. 产品,产物;产量;出产
They came here in search of new markets for their products.
他们来此为他们的产品寻找新市场。
2. 结果,成果
The plan was the product of many days of careful thought.
这个计划是许多天仔细考虑的成果。
3. 作品,创作
4. 【数】(乘)积
20 is the product of 5 and 4.
二十是五与四的乘积。
5. 【化】(化学反应的)生成物
英语翻译
原稿个别地方意思有点不连贯，如有问题可进一步联系。
From propylene , ammonia and air montecatini edison’s highly active, low bulk density fluid catalyst gives acrylonitrile at lowest cost
Montecatini Edison 的高活性、低体积密度流体催化剂，以最低的成本从丙烯、氨水和空气获得了丙烯腈。
Giorgio Caporali , Montecatini Edison S.p.A,Milan ,Italy
Giorgio Caporali , Montecatini Edison S.p.A,Milan ,意大利
Since about 1960,the leading route to acrylonitrile has been by catalytic reaction of propylene with ammonia and air。大约从1960年起，获得丙烯腈的主要技术路线一直是利用丙烯与氨水和空气的催化反应。 Montedison’s process was first commercialized in 1968 in their 60,000-ton/year plant. This process has been licensed to Paular CO. in Spain for a 40,000-ton/year plant and montedison is planning another plant for themselves with 100,00 ton/year capacity. Montedison的工艺首先是在1968年商业化的，工厂的生产能力为6万吨/年。这一工艺已经特许给西班牙的Paular公司4万吨/年的工厂中生产，Montedison正在为自己计划另一家1万吨/年生产能力的工厂。
Although modern commercial acrylonitrile process appear similar and produce very pure product ,each is characterized by its own original features:
虽然现代化的商业丙烯腈工艺似乎是类似的，而且生产出很纯的产品，但每一种都有它们自己的固有特点：
Catalyst system and rector technique
催化剂系统和反应器技术
Nature, condition and sequence of recovery and purification step.
回收和纯化步骤的本质、条件和程序
These step and features in the Montecatini Edison process are shown in FIG .1 and other data may be found in the literature.
Montecatini Edison工艺的这些步骤和特点示于图1， 其他数据可以在文献中找到。
RAW materials . There are only three reactants, the oxygen being supplied as air and no stream is repuired as diluent . Technical grade propylene(92-93 percent,the balance being propane ) and anhydrous fertilizer grade ammonia are satisfactory. Higher olefins are undesirable since they make byproducts which burden the purification steps. The there gaseous reactants are premixed and fed to the bottom of the reactors.
原材料。反应物只有三种，氧由空气提供，不需要气流作为稀释剂。技术级的丙烯（92－93％，平衡剂为丙烷）和无水化肥级氨水就能满足要求。过高的烯烃是不希望有的，以为它们形成会烦扰纯化步骤的副产物。气体的反应物被预混合和馈送到反应器的底部。
Reactors. Large size fluid bed catalytic reactors are used which provide:
反应器。采用大尺寸的流化床催化反应器，它具有：
A bottom distribution plate for supporting the catalyst and distributing the gas;
用于支持催化剂和分配气体的底部分配板；
A top set of multiple effect cyclones, with dip legs ,recover and return the catalyst to near the bottom of the reaction zone;
一组顶部的多功能旋流分离除尘器，带有料腿，用来将催化剂回收和返回到反应区的底部。
Special sets of heat exchangers in the fluid bed for reaction heat removal and steam generation.
在流化床中的若干组特殊的热交换器，用于去除反应热和流的发生。
Reaction conditions . Typical reaction condition values are: 420-460。C ; 2kg/cm2 absolute pressure ;feed composition ranging from 6.7-8 vol. percent propylene ,0.2-0.6percent propane,7.5-9percent ammonia,82.5-86percent air (which gives a minimum excess ammonia with respect to propylene and about 50percent stoichiometric excess air); liner gas velocity between 1 and 2 feet per second(based on empty reactor with total inlet gases volume at average operating conditions);and contact time in the order of a few second,e.g.,2to 6 second when gas volume is based as stated above, at the average operating conditions and referred to the volume of the packed catalyst.
反应条件。典型的反应条件值为：420－460℃；2kg/cm2绝对压力；馈给组分的范围为6.7－8体积百分比的丙烯，0.2－0.6百分比的丙烷，7.5－9百分比的氨水和82.5－86百分比的空气（这提供了相对于丙烯的最小过量氨水，和大约50％化学计量的过量空气）；1到2英尺/s的线性气体速度（基于空的反应器，在平均工作条件下总的入口气体体积）；接触时间在几秒的量级，例如在气体体积以上述为基础，在平均工作条件下，参照包装的催化剂体积时约2到6秒。
Catalyst The catalyst consists of oxygenated compounds of tellurium, cerium and molybdenum supported on a microspheroidal silica carrier. It contains about 20-30wt./wt. percent of active elements and has has a bulk density. The catalyst is presently produced by in facilities near the acrylonitrile plant.
催化剂。催化剂由支持在微球形二氧化硅载体上的碲、铈和钼的氧化混合物构成。它含有大约20－30wt/wt％的活性元素和体积密度。该催化剂目前由靠近丙烯腈工厂的设备中生产。
