查询词典 methane

According to the system characteristic of the household methane digesters and the combustion characteristic of methane, a series of household methane generators were designed and manufactured ,the power respectively being

根据农村户用沼气池的系统特征和沼气的燃烧特性，设计研制了功率分别为700，1800，3800，4800W等系列的户用沼气发电装置。

According to the system characteristic of the household methane digesters and the combustion characteristic of methane,a series of household methane generator s were designed and manufactured,the power respectively being

根据农村户用沼气池的系统特征和沼气的燃烧特性，设计研制了功率分别为700，1800，3800，4800 W等系列的户用沼气发电装置。

In recent years, the demand growth rate of methane chloridate beyond the production growth rate in domestic market, there are more than 10 methyl chloride factories in our country, with the general production capability about 70 thousand tons, but the consumption is near about 80 thousand tons, the domestic market demand of monochloro methane reached 120—140 thousand tons in 2006, but the monochloro methane production capability just only 80-100 thousand tons.

近几年，国内市场对甲烷氯化物产品的需求增长速度大大快于生产增长的速度，我国现有氯甲烷生产厂10多家，总生产能力约7万吨，消费量近8万吨，到2006年国内对一氯甲烷的总需求量达到12-14万吨，而时国内一氯甲烷的生产能力8-10万吨。

We found the symmetry was destroyed or decreased in the crystal structure of symmetrical star-shaped molecules, such as tetra (4-cyanophenoxy methyl -methane, tetra (N-pyrrolemethyl) methane, and a center of charility was self-formed. The phenomena was discussed by analyzing the intermolecular hydrogen-bonding interactions of tetra (4-cyanophenoxy methyl -methane.

本文发现，原本高度对称的星状分子，在晶体结构中，分子对称性破坏或降低，表现为手性分子；以四（4-氰基苯氧基甲基）甲烷为例，从分子间氢键作用的角度，解释了该现象形成的原因。

Technology program: there are two methods to produce methane chloridate, one is methane chlorination which methane as the original material, the other is methanol hydrochlorinate which methanol as the original material.

技术方案。生产甲烷氯化物的原料路线主要有两种：以甲烷为原料的甲烷热氯化法和以甲醇为要料的甲醇氢氯化法。

In America, the methane chloridate are all produced by methanol hydrochlorinate; in Europe, there are only three factories to produce methane chloridate by methane chlorination and in Japan, only two factories.

随着甲醇工业的迅速发展，甲醇氢氯化法在经济上和技术上的优势越来越明显，在世界范围内已有后来居上取代甲烷法的趋势。在美国目前甲烷氯化物生产全部使用甲醇法，在欧洲只有3个工厂，日本只有2个厂还在使用甲烷热氯化法。

The author pointed out that generated CBM should consist of primary biogenic methane gas in lignite stage, thermogenic methane gas in long-flame coal to gas/fat coal stage, and deuterogenic biogenic methane gas in coal seam imbedded stage.

首先，根据下侏罗统八道湾组和中侏罗统西山窑组煤储层发育、煤岩、煤质、煤级、煤类、煤相地质特征论述了本区低煤级煤层气生成的物质基础。

Identical data inequilibrium stats and similar shock-induced reacting flow fields are gained for tworeaction models when projectile velocity is 3km/s. In this case, the molar fraction ofdissociated methane is so small that the frozen flow or a very simple reaction modelcan well describe the flow field of weakly shocked methane. As projectile velocityincreases, molecular methane is readily dissociated and some stable products are formed. Only do the numerical results of the 40 reactions involving13 species approach to the corresponding experimental results.

计算表明，当飞片速度低(3km／s)时，两种反应模型给出冲击状态参数的结果基本一致，因为这时甲烷气体冲击波后的成分变化很小，说明可以用更简单的化学反应模型描述高温甲烷的化学反应过程；当飞片速度增大时，甲烷分子迅速的离解，反应产物容易形成稳定的化合物，只有13组元40反应模型的计算结果才能与实验结果接近。

Methanol hydrochlorinate has two steps: one is to produce monochloro methane by methanol hydrochlorinate reaction and the other is to make monochloro methane produce polychlorinated methane.

二硫化碳法、氯油法和乙醛法因不经济和环保问题在国外已被淘汰；C1一C3废氯烃全氯化法是利用氯乙烯等装置的副产废料生产四氯化碳并联产四氯乙烯，该法是一种非常经济的工艺，在国外曾被十分广泛地采用，但随着发达国家四氯化碳的停止使用，目前大部分基于该工艺的装置被迫停产。

In the simulation model, the cellular automata model was applied to describe the tunnel network system, a methane gas cell was used to represent an energy unit of methane gas which was eradiated from walls of working spaces, mined coal piles, surrounding rocks and excavations, a grid cell was used to represent a tunnel grid and its states, these grid cells contain such state parameters as velocity and quantity of methane gas.

在该方法中，用元胞自动机模型描述地下矿巷道网络系统，用瓦斯元胞来描述从工作面煤壁、采落的煤堆、围岩和采空区渗出的瓦斯能量单元；用格子元胞描述巷道格子及其状态，这些格子元胞均用瓦斯运移速度和瓦斯含量等状态参数来描述。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐