查询词典 dimethyl ether

Suitable water-immiscible organic solvents include aromatic hydrocarbons, eg toluene, xylene, naphthalene, tetrahydronaphthalene and methyl naphthalene; chlorinated aromatic hydrocarbons, eg chlorobenzene, fluorobenzene, chloronaphthalene and bromonaphthalene; esters, eg butyl acetate, ethyl acetate, methyl benzoate, ethyl benzoate, benzyl benzoate, butyl benzoate, phenylethyl acetate, butyl lactate, benzyl lactate, diethyleneglycol dipropionate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di(2-ethylhexyl) phthalate; alcohols having six or more carbon atoms, eg hexanol, octanol, benzyl alcohol, phenyl ethanol, phenoxy ethanol, phenoxy propanol and phenoxy butanol; ethers having at least 5 carbon atoms, preferably C 5-14 ethers, eg anisole and phenetol; nitrocellulose, cellulose ether, cellulose acetate; low odour petroleum distillates; turpentine; white spirits; naphtha; isopropylbiphenyl; terpene; vegetable oil; mineral oil; essential oil; and natural oil; and mixtures of any two or more thereof.

适用于水互溶的有机溶剂包括芳香族碳氢化合物，如甲苯，二甲苯，萘，四氢萘和甲基萘；氯代芳香族碳氢化合物，如氯苯，氟，氯萘和萘；酯类，如醋酸丁酯，醋酸乙酯，苯甲酸甲酯，苯甲酸乙酯，苄酯，苯甲酸正丁酯，苯，醋酸丁酯乳酸，乳酸苄，二甘醇二丙酸酯，邻苯二甲酸二甲酯，邻苯二甲酸二乙酯，邻苯二甲酸二丁酯，二（2乙基己基）酯；醇有6个或更多碳原子，如己醇，辛醇，苯甲醇，苯乙醇，苯氧基乙醇，丙醇和苯氧基苯氧丁醇；醚至少有5个碳原子，最好荤5-14醚，如苯甲醚和phenetol；硝化棉，纤维素醚，醋酸纤维素，低气味石油蒸馏；松节油；白酒，石脑油isopropylbiphenyl；萜类，植物油，矿物油，挥发油；和天然油，以及任何两个或两个以上其混合物。

In this paper,the advanced technologies in diesel engine,including supercharging,EGR and common rail fuel supply were applied to dimethyl ether engine.The engine performance was investigated in various operating conditions.

将柴油机增压技术、废气再循环技术、共轨式燃料喷射技术应用于二甲醚发动机，探讨了在各种技术条件下发动机的排放性能、动力性和经济性。

Gas vapor reforming is the traditional techniq ue of synthesis gas producing,which can make the chemicals such as hydrogen,methan ol,dimethyl ether,etc.,also which is the core technology of the battery with gas methanol fuel.

天然气蒸气重整是传统的合成气制造技术，可以用来制造氢气、甲醇、二甲醚等化工产品，也是天然气制甲醇燃料电池的核心技术部分。

I. engine was modified to dimethyl ether homogeneous charge compression ignition combustion.

在一台2135型柴油机上实现了纯DME的均质充量压缩燃烧方式。

All of the three ether imides synthesized exhibited low inherent viscosity, high thermal stability of 456 to 499 oC in TGA measurement (5wt% loss/N2) with Tgs between 240 ~254 oC. They also show good solubility behaviors in N-methyl-2- pyrrolidinone, dimethyl sufloxide, dimethyl formamide, chloroform, and m-cresol.

所得聚醚亚醯胺高分子皆具如下相同之优点如：包括低固有黏度表现，其热性质上也具高隐定性，其TGA在氮气5 wt %重量损失测定可达456 ~ 499 ℃，其玻璃转移温度达240 ~ 254 ℃，在溶解度方面，它们皆可溶解於高极性有机溶剂如： NMP、DMSO、DMF，亦可溶於中极性之溶剂如CHCl3、m-cresol。

In China, the coal resource is rich, two-thirds of the hydro-electricity resource is yet to be exploited, the applications of nuclear electricity, wind electricity generation, solar energy, and biomass energy have just begun, and there is a very positive prospect for developing alternative energy sources of fuel alcohol, methanol, dimethyl ether, and coal liquefaction.

中国煤炭资源丰富，三分之二的水电资源尚未开发，核电、风力发电、太阳能以及生物质能的应用刚刚起步，燃料乙醇、甲醇、二甲醚以及煤炭液化等替代能源的发展前景广阔。

ABSTRACT In this paper, a novel process for dimethyl ether synthesis from syngas has been studied by using fluidized-bed reactor syst...

本文对合成气一步法合成二甲醚的流化床反应新技术进行了系统研究。

In this thesis, this system is used for epoxidation of propylene and styrenewith good results. The solvent effect is investigated for epoxidation of styrene. In the mixedsolvent of dimethyl phthalate / TBP or phenyl ether / TBP, the selectivity for styreneoxide is good but the conversion of styrene is low due to the coordination to thecatalyst of the solvent. When part of dimethyl phthalate or phenyl ether is replacedby toluene, the conversion increases and the selectivity keeps constant.

邻苯二甲酸二甲酯或二苯醚等与磷酸三丁酯的混合溶剂中环氧化的选择性较高，但由于溶剂对催化剂的配位作用抑制了催化剂的活性，苯乙烯转化率很低；当部分的邻苯二甲酸二甲酯或二苯醚被甲苯取代后，苯乙烯的转化率提高，生成环氧苯乙烷的选择性不变。

Finally the thermophysical properties of dimethyl ether are studied systematically, including the critical parameters, vapor pressure, saturated vapor and liquid density, PVT property, surface tension, and saturate liquid viscosity.

并在此基础上，拟合得到了新的二甲醚饱和蒸气压方程、饱和气液密度方程、气相状态方程、表面张力方程和粘度方程等。

Measurement of laminar burning velocity of dimethyl ether/air mixtures was taken under different initial pressures and equivalence ratios using a constant volume bomb and high –speed schlieren photography.

在定容燃烧弹中利用高速纹影摄像法系统地研究了不同燃空当量比和初始压力下二甲醚－空气混合气的层流燃烧特性。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。