查询词典 propane

For people who complaining human rights, faky voices, air pollution in Beijing, please wake up and clear your mind, look at canada, CBC never broadcast anything supporting communist;secondly, our Toronto officers allows propane facility built 50 meters away from residents and the blast ruined so many people's house, why don't you say louder on those issues?

首先我要谢谢CBC给我们带来了如此盛大的闭幕式。给那些抱怨北京人权、噪音好污染的人说，醒醒吧，清醒一下头脑，看看我们自己--加拿大，CBC从来不会报导GCD的任何好事

Selective catalytic oxidation of propane has been a problem from the industrial point ofview because it is less expensive but difficult to functionalize.

丙烷作为重要的小分子烷烃，将其选择氧化制丙烯酸是一条很有前途的路线。

The OH functionality of the polyether may be controlled by using modifiers such as glycidol, ethylene glycol, water or trimethylol propane

用缩水甘油、乙二醇，水或三羟甲基丙烷等改良剂，可控制聚醚的羟基官能团。

The OH functionality of the polyether may be controlled by using modifiers such as glycidol, ethylene glycol, water, or trimethylol propane

可用缩水甘油，乙二醇，水或三羟甲基丙烷等改良剂，可控制聚醚的羟基官能团。

The formation of microemulsion system containing emulsifier,acrylamide,2-ethyltrimethyl ammonium chloride,sodium-2-acrylamido-2-methyl-propane-sulfonate and hexamethylene was studied.

对复配乳化剂(span+tw een)、丙烯酰胺、(2-甲基丙烯酰氧乙基)三甲基氯化铵、2-丙烯酰胺基-2-甲基丙磺酸钠和环己烷组成的微乳液体系进行了研究，研究了单体总质量浓度、AM摩尔含量和阴阳离子单体配比改变对形成微乳液需要的适宜H LB值和最小乳化剂用量的影响。

These conditions included original material source, reagent ratio, base solutions, power of the microwave, reaction time and so on.2, Chitosan obtained from above was modified by Schiff base type macrocycles, which was prepared by the reaction of the reagents of salicylaldehyde, glacial acetic acid, hydrobromic acid, chloroepoxy propane and the others.

反应的最优化条件为：物料比1：25；反应时间20min；NaOH溶液浓度为50%；微波功率为450w。 2、利用原料水杨醛、氢溴酸、冰醋酸等采用四步法合成了含羟基的Schiff碱型大环化合物，然后以取代方法将此Schiff碱型大环化合物负载到壳聚糖上，得到具有特殊结构与性能的壳聚糖衍生物，并得到各中间产物的红外光谱图。

Ionization was accomplished by using iodoethane and γ-propane sultone respectively.

通过碘乙烷和v－丙磺酸内酯对上述样品进行季铵化，合成了阳离子型及双离子型离聚物。

In the oxygen steelmaking processes, material from the blast furnace saturated with carbon is placed in a vessel capable of holding some 100 ~ 300 t of hot metal. Oxygen is then lanced from above the bath for about 15 min, or alternatively a mixture of oxygen and propane is blown up through tuyeres in the bottom of the vessel (bottom-blown).

在氧气炼钢工艺中，把来自于高炉的含饱和碳的铁水兑人一个容量约为100一300吨的转炉中，然后用氧气从金属熔池上面向熔池喷吹约I5分钟，或者通过熔池底部喷嘴喷入氧气和丙烷的混合气体。

So the catalysts for producing methylglyoxal from 1,2-propane glycol were studied in this thesis.

因此本文对丙二醇氧化制备丙酮醛的催化剂进行了研究。

Firstly, the molybdenum based catalysts modified by silver, phosphorus, vanadium using aluminum oxide as carrier were studied. The results showed that its catalytic performance for 1,2-propane glycol oxidation to methylglyoxal is good.

论文首先对以氧化铝为载体，在银、磷、钒修饰下的钼系催化剂进行了研究，通过实验发现该催化剂对丙二醇氧化制备丙酮醛具有高的催化活性和较好的选择性。

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。。。。