查询词典 graphite

Molysite is introduced into releasing agent and with the increasing sensitivity of molysite ,a method for determination of ultra trace gold in rock samples by graphite furnace atomic absorption spectrometry is introduced.

在解脱测定液中引入三价铁盐，并在其增敏下，使用石墨炉原子吸收法测定岩石样品中的超痕量金。

The defects and electronic momenta in graphite and nanocrystalline carbon have been studied by positron annihilation techniques.

用正电子湮没技术研究了石墨和纳米碳中的缺陷和电子动量。

The determination of lead content in naphtha by graphite furnace atomic absorption spec-troscopy was studied with tetrahydrofuran as solvent, nickelous nitrate as matrix modifier and suitable amount of iodine solution added in samples.

将试样用四氢呋喃稀释，加入适量碘溶液，以硝酸镍为基体改进剂，研究了用石墨炉原子吸收光谱法直接进样测定石脑油中的铅含量。

Using silicon and metallic iron,α-Si_3N_4 olivary microparticles with a diameter of about 300～500 nm have been obtained at 650℃.When silicon and metallic aluminium were used to react with ammonium chloride,α-Si_3N_4 nanowire bundles with diameter of about 8 nm can be also obtained at 600℃.Since all of the starting materials used are relatively cheap,the methods will have potential prospect in industrial application.3.Graphite-like carbon nitride nanowire bundles with diameters of 200-500 nm were synthesized from the solid state thermolysis of melamine at relatively low temperature(400℃).

相关研究工作的成果发表在International journal of applied ceramicstechnology.2、以廉价的硅铁合金和氯化铵为原料，在600℃合成了α相的氮化硅纳米线束，单根纳米线直径8 nm，长达800 nm，考察了反应温度和反应时间对产物纯度和形貌的影响；以硅粉和铁粉为原料合成了纯度良好，直径为150～500 nm的α-Si_3N_4亚微粒子；以硅粉和铝粉为原料在400-600℃合成了直径为10 nm左右的α相氮化硅纳米线束。

In fluctuating microwave, deposition of diamond films was investigated and some significant results were obtained:1 An appropriate fluctuating microwave can distinctly improve the quality of diamond films, and can grow diamond films almost without microcrystalline graphite.2 Both overlong or overshort bottom duration and overlong or overshort fluctuation period are unfavorable for reduction of non-diamond content. Only moderate ones have optimal effects on it.3 Compared with a smooth microwave, a fluctuating one can reduce the diamond nucleation density slightly.4 In fluctuating microwave, even if a higher CH〓 concentration chosen, diamond films with quality better than that of those deposited at a lower CH〓 concentration and in smooth microwave can be obtained.

在脉动微波下进行了沉积金刚石膜的研究，得到下述结果：1）采用合适的脉动微波，能使金刚石膜的沉积质量显著提高，并能使金刚石膜中的微晶石墨得到几乎完全的抑制。2）过长或过短的平底时间或脉动周期均不利于金刚石膜中非金刚石相碳含量的降低，只有适中的平底时间或脉动周期才有最佳的降低非金刚石相碳含量的效果。3）脉动微波会使金刚石的形核密度有所下降。4）脉动微波下，即使选用较高的CH〓浓度，也能得到沉积质量比在平稳微波下采用较低的CH〓浓度所制备的金刚石膜的沉积质量要明显提高的金刚石膜。

We are able to provide oxidization resistance processing of the graphite surface.

石墨制品表层的抗氧化处理。

Short carbon fiber reinforced copper-graphite composite materials was studied based on advanced pantagraph slider as its application background.

以高性能受电弓滑板为应用前景，研究了短炭纤维对铜-石墨复合材料冲击性能的影响。

However, semi-steel is made of 10 ~ 20% cementite and pearlitic matrix, there exists no pellet-shaped graphite, so sticking is easy to happen to it, which is not expected dunng rolling.

然而半钢材质是由10-20％渗碳体及珠光体基体所组成，其内不存在球状石墨，所以半钢材质容易产生粘钢现象，这是轧制过程所不希望的。

Hexachlorocyclophosphazene was prepared using phosphorous pentachloride and ammonium chloride as raw material, hccp was mixed with Montmorillonite which aimed to decrease MMT.'s hydrophilicity. Solid state reserve cell of Mg│reformed MMT.│polymer gel containing water│graphite was assembled, and cell performance was tested. XRD and IR results show: When mass percentage lower than 9.1%, hccp mixed with MMT to form homophase, hccp phase was observed in the mixture when percentage higher than 9.1%, for hccp specific diffraction peak appears in XRD data, and 1220cm-1 which was assigned to P=N double bond 's expand vibration appears in IR data.

合成了六氯环三磷腈，并用六氯环三磷腈与蒙脱石混合对其改性，期望能减小蒙脱石的吸水性能；组装电池Mg |改性蒙脱石|含水凝胶|石墨片，并测试电池的性能。X射线粉末衍射数据和红外光谱数据表明：蒙脱石容纳六氯环三磷腈的质量分数在4.8%-9.1%之间，可与蒙脱石形成单一物相，但混合质量分数大于9.1%时，改性蒙脱石出现六氯环三磷腈的特征衍射峰，和1220 cm-1的六氯环三磷腈P=N双键的特征伸缩振动峰，证明为蒙脱石与六氯环三磷腈的两相混合。

And in June 15, 2004 successfully obtain the graphite POCO U.S.

公司有一批多年数控加工经验的专业

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。