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熔点

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Therefore, the melts and coalesces of Al during the combustion process can inhibit diffusion of nitrogen from outside due to collapse of the pores.

由于金属铝的熔点较低660℃,而金属锆的熔点较高1855℃,在燃烧反应的高温下,金属铝要熔融团聚,阻碍氮气向试样内部的渗透。

However, there is plenty of high ash melting point coal in China which could not be gasified in almost all entrained flow bed gasifier currently, so it's imperative that a new coal gasification technology should be built out urgently.

煤气化技术是解决未来能源、环境和能源安全战略的核心技术之一,而我国煤炭的特点是高灰熔点煤的储量多,现有的气流床气化技术大都无法满足其高效气化的要求,因此亟待研发适合高灰熔点煤的先进煤气化技术。

The rheological behavior of low-melting point polyester chip was studied.

熔点聚酯与普通聚酯有良好的相容性,其熔点在 90~ 1 80℃,可以制成皮芯复合纤维,有着广泛的应用前景[1 ] 。

A low-melting point polyester was synthesized by introducing third and fourth components into polyester macromolecule during copolymerization.

通过共聚反应在PET大分子链中引入第三组分、第四组分合成低熔点聚酯,对合成的低熔点聚酯的结晶性能、热稳定性和流变性能进行了研究。

The sheath-core ratio, compounding ingredient of the sheath ,chip drying process and drawing process were discussed for the composite spinning of low-melting point and normal polyester chips.

研究了低熔点聚酯切片的流变性能,以及低熔点聚酯与普通PET皮芯复合纺丝时的皮芯层复合比、皮层组分配比、切片干燥工艺和纤维拉伸工艺。

Their mesogenic temperature ranges cover from 78 to 110 degrees. The milting points of compound 19a and 19b are 43.9 ℃ and 74.8 ℃ respectively while their clearing temperatures are 92 ℃ and 112 ℃. Their mesogenic temperature ranges cover from 36 to 57 degrees. They are suitable for formulating eutectic mixture and for the applications in PDLC, reflective liquid crystal display, and IR modulator.

第三系列同样以2,3-邻二氟苯二炔基二苯基为主体,但相对碳链长度和前一系列相反,将邻二氟苯二炔基端的碳数固定为6,二苯基端碳数分别为2与3,合成出向列型液晶化合物19a与19b,观察到熔点与澄清点温度均较前一系列化合物低,熔点温度下降约20~30oC,澄清点温度下降约50~70 oC,液晶相温度范围约36~57 oC之间,期望能应用在PDLC,反射式液晶显示器,及红外光调节器上。

The results show that all-aromatic polyesters with high molecular weight can be synthesized in ...

取代基的引入降低了共聚酯的熔点,而取代基链长直接影响共聚酯的熔点

So the thickness of transporting metal piece should be raised up. If we choose copper as electricity transporting piece which has a low melting point, it is easy for melt copper to flow to inside tube.

在石墨管处使用低熔点的导电片铜时,熔融的铜易向石墨管内壁流动,将引起电流的持续下降,此处必须使用高熔点的金属如钼片予以隔绝。

wax-sweating ; two-stage sweating ; fractional distillation ; low-melting ; dewaxing foots oil ; semi-refined

以石蜡发汗方法生产熔点低于50℃、含油量1.5%以下的低熔点半精炼产品是十分经济的。1原料选择石蜡发汗工艺以酮苯脱蜡后产生的蜡膏为原料进行生产

The physics teacher said to us in class, The melting point of gold was much higher than that of tin.

&物理老师课上对我们说:&金子的熔点比锡的熔点高得多。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。