查询词典 si

Meanwhile, the effects of reaction temperature, reaction time, amount of catalyst and the ratio of Si/A1 on the nitration were investigated.

实验考察了反应温度、反应时间，催化剂用量及Si/Al对反应结果的影响。

The capabilities of electrical charges storage in SiO〓 film and Si〓N〓 film were studied in a systematic way, and based on these results, new kinds inorganic noncrystalline composite electret were first developed.

本文对SiO〓薄膜以及Si〓N〓薄膜的电荷贮存性能进行了系统研究，并以此为基础发展了新一代无机非晶复合贮电材料，全文分为以下三部分

Nonstable growth of Al-Si eutectic in constrained condition has beeninvestigated by means of change of the pulling velocity in an unidirectional solidi-fication system.

本文在定向凝固系统上用变速抽拉方法试验研究了Al-Si共晶强制非稳态生长过程。

In this new algorithm, 2-D X-ray images are collected for Ca, Si, Al, Fe, S, K, Mg, and grey-level value of the same point in these images are normalized and arranged as a vector in a particular order. In this paper, the vector is named as character vector, for it can be used to characterize each point in cement pastes 2-D image.

新算法采集水泥截面上Ca、Si、Al、Fe、S、K、Mg的二维X-射线图像，将这些图像同一点处的灰度值正规化并按一定的顺序排列后写成向量的形式，称为该点的特征向量。

Domain structures in Mn-Si-Al octagonal quasicrystals have been studied by high resolution electron microscopy and image processing.

用高分辨电子显微术和图象处理研究了Mn-Si-Al八次准晶中的畴结构。

We provide the best and optimum solution for our customers with Intelligent SI Engineering.

我们在智能SI工程领域为客户提供最佳解决方案。

Boron nitride thin films were prepared on the (100)-oriented surface of n-Si(0.008~0.02 Ωm) by means of R.F.

利用射频磁控溅射方法，在n型(100)Si(0.008~0.02Ωm)基底上沉积了氮化硼薄膜。

H-BN thin films were prepared on the (100)-oriented surface of n-Si by r.f. sputtering physical vapor deposition.

利用射频磁控溅射方法，真空室中充入高纯N2(99.99%)和高纯Ar(99.99%)的混合气体，在n型(100)Si基底上沉积了六角氮化硼薄膜。

H-BN thin films were prepared on the (100)-oriented surface of n-Si by r. f. sputtering physical vapor deposition. The field emission characteristics of the BN films were measured in a ultra high vacuum system. It has been found that the field emission characteristics of BN films is affected evidently by substrates temperature.

利用射频磁控溅射方法，真空室中充入高纯N2(99.99%)和高纯Ar(99.99%)的混合气体，在n型(100)Si基底上沈积了六角氮化硼薄膜，在超高真空0^(-7Pa系统中测量了BN薄膜的场发射特性，发现沈积时基底温度对BN薄膜的场发射特性有很大影响。

On the basis of orthogonal experiment, the effect of Mg content and heat treatment on mechanical properties of near eutectic Al Si cast alloys modified with Sr has been investigated.

以正交试验为基础，通过调整Mg含量和热处理工艺，分析它们对Sr变质近共晶Al Si 铸造合金力学性能的影响。

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％。