查询词典 hydrogen fluoride

Visible above are red glowing emission nebulas of hydrogen, blue reflection nebulas of dust, dark absorption nebulas of dust, and the stars that formed from them.

上图所见，红色的部份是高温由氢组成的发射星云、蓝色的部份是尘埃造成的反射星云、而黑色的部份是尘埃所产生的吸收星云，恒星便是从中诞生。

White silk, wool fabric on the grass stains can be removed using hydrogen peroxide,.

白色丝绸、羊毛织物上的青草渍，用双氧水即可去除。

At higher temperatures (for example, 75℃), it is easier for water molecules to enter into wood cell wall, but at this moment the hydrogen bonding effect between water molecules and wood adsorption sites is very weak and also these molecules are in an inferior order even to that of liquid water molecules.

吸着过程中水分热力学量的分析结果表明，在水分吸着的初期阶段（吸湿开始后0～10小时），在较低温度条件下进入木材的一部分水分子附着在木材细胞腔表面，在较高温度条件下水分子直接进入木材细胞壁中。

The enterprises which are produced by hydrogen retreat furnace has been sold in Shanghai, Zhejiang, Jiangsu and many other stainless steel wire rod production enterprises.

本企业所生产的氢退炉已销售上海、浙江、江苏等多家不锈钢线材生产企业。

This beautiful telescopic view combines a composite color image with narrow band data that isolates light from hydrogen and oxygen atoms in the wind-blown nebula.

这张美丽的望远镜影像是一张色彩合成的窄波段数据影像，分离了这个星云内氢和氧原子发出的光。

The results show that the catalyst causes the re-form reaction of CH 4 and steam to take place at a lower temperature (200～500 ℃) and to generate part of hydrogen.

实验和计算结果都表明，该催化剂使重整反应能够在较低温度下(2 0 0～ 5 0 0℃)发生，产生少量 H2 。

The result shows that the elimination reaction and ring closing reaction are synergistic, and the hydrogen in the elimination reaction derives from hydroxyl. In addition, the activation energy of the reaction is 139.2kJ/mol.

计算结果表明，该反应中的消除反应和成环反应是协同进行的，溴化氢消除反应中的氢来自与O(22)相连的羟基氢，反应的活化势垒为139.2kJ/mol，反应放热25.1kJ/mol。

Compared the INS spectra taken from RAL, it was found that all the potentials gave well-separated translational and librational regions. However, all of them can not reproduce the double peaks (about 28 and 37 meV) in optics band due to the lack of hydrogen bond.

除此之外为了分析不同的势能模型对水合物的描述效果，利用不同的刚性势能(TIP3P、BF和TIP4P)对水合物的振动谱进行了计算，通过与中子散射笼型水合物的。

Well-resolved absorption spectra of benzoic acid and its derivatives with one hydrogen atom replaced by a substituent group CH3, OH, NH2 or NO2 were reported in the frequency region between 6 and 67 cm－1 at room temperature with terahertz time-domain spectroscopy.

本文利用太赫兹时域光谱技术获得了295K时苯甲酸，不同位置取代的甲基苯甲酸以及不同取代基对位取代苯甲酸在6至67 cm-1波段的时域光谱。

The cause of weldmetal porosity is the contaminations of hydrogen in the weld metal.

焊接金属中的氢污染是造成焊接金属的多孔性的原因。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48