查询词典 propane

Epoxy propane is a basic material for petro-chemical industry, and it is the third derivative of Propylene except for Polypropylene and propylene nitrile.

环氧丙烷是重要的石油化工基础原料，在丙稀的重要衍生物中是仅次于聚丙烯和丙烯腈的第三大品种。

The surface heat processing man method has the flame hardening and induction heating the heat treatment, the commonly used heat source has oxyacetylene or flame, the induced current, the laser and the electron beam and so on oxygen propane and so on.

在渗入元素后再进行其它热处理工艺，比如淬火和回火。化学热处理的主要有渗碳、渗氮、渗金属的方法。

From this perspective, flammable ice can be regarded as the natural gas in the highest purity, and you know, the general state of the natural gas, methane is only about 92% less, in addition to about 3% of the ethane, about 2% of the nitrogen and about 1% of the propane, as well as a very small amount of butane, pentane and oxygen and so on.

从这个角度说，可燃冰可算是自然中纯度最高的天然气了，要知道，一般状态下的天然气中，甲烷大约只占92%不到，此外还有3%左右的乙烷、2%左右的氮气和1%左右的丙烷，以及极少量的丁烷、戊烷和氧气等。

The optimum conditions were reaction temperature 120°C, reaction time 20h, mole ratio of 5-chloromethyl-2-oxazolidinone and sodium phenolate 1:1. 3,5-Dimethylphenol and epichlorohydrin in sodium hydroxide were condensated to give l,2-epoxy-3-phenoxy propane, then the reation of l,2-epoxy-3-phenoxypropane and the carbamate afforded oxazolidinone in the yields of 69.0%~76.0%. The side reaction had been avoided effectively by the uses of the excessive epichlorohydrin and mixed catalysts.

用3，5-二甲基苯酚和环氧氯丙烷在氢氧化钠存在下缩合生成苯氧基环氧丙烷，然后和氨基甲酸酯反应生成噁唑烷酮，采用过量环氧氯丙烷和使用混合催化剂，有效的避免了副反应的发生，提高了噁唑烷酮的产率，产率69.0%～76.0%。

In this paper, WAXD was used to investigate a series of liquid crystalline and non liquid crystalline sequential copolyester, which was synthesized from 1,10 decanediol, 2,2 bis(4 hydroxyphenyl) propane and the mesogenic monomer 2 methyl 1,4 phenylene bis(4 chloroformyl) benzoate.

应用广角X射线衍射对2，2－双（4羟基苯基）丙烷，1，10癸二醇与2－甲基－1，4－苯撑双（4氯甲酰）苯甲酸酯的一系列共聚酯进行了研究。

The pilot uses the propane burner to control how high or low the balloon flies. To go up, he or she turns up the burner to make the air in the envelope hotter. To go down, the pilot just lets the air cool down.

驾驶员会通过丙烷燃烧器来控制气球飞的高度，想要飞高时，他或她就会打开燃烧器加热气囊内的空气，若想要降低高度时，驾驶员只要让空气冷却下来即可。

As it opens, the pilot uses a propane burner to blow hot air into the envelope. The balloon then rises as it is inflated with the hot air until it is upright.

当气球充好气后，驾驶员会使用丙烷燃烧器将热气灌入气囊，当热空气渐渐增加，气球会慢慢的上升，到最后会完全竖立起来。

This involved placing a prill into the flame of a propane torch, and observing the colour of the vapourized product.

这涉及放置一个prill到的火焰丙烷火炬，并观察颜色的vapourized产品。

It is an expensive fuel but less so than either oil or propane which are imported products.

这是一次昂贵的燃料，但不是那么无论石油或丙烷是进口产品。

It's so much better than the results with propane gas.

它'这么多比丙烷气体的结果更好。

Pradeep Indulkar, a senior official at the Maharashtra state Home Ministry say 101 human were killed and 287 injured.

马哈拉施特拉邦内政部高级官员Pradeep Indulkar称，有101人在冲突中丧生，287人受伤。

Mark Frei, a senior vice president of West, says 80% of West's homeagents have some college education, compared with 30% of those whowork in office-based call centers.

Frei说，该公司80%在家办公的人员都拥有本科学位，而在公司电话中心工作的人中只有30%拥有本科学位。