查询词典 SN

The defect formation of Langmuir-Blodgett film of 1,2-dipalmitoyl- sn -glycero-3-phosphocholine injured by potassium oxalate was investigated with the aid of atomic force microscopy and fluorescent microscopy. The effect of the defects on the growth of calcium oxalate monohydrate was investigated by scanning electronic microscopy.

本文采用经草酸钾处理后存在缺陷的二棕榈酰磷酯酰胆碱的LB膜为模型，采用原子力显微镜、荧光显微镜和扫描电子显微镜研究了模型膜的缺陷畴区及其对一水草酸钙晶体生长的促进作用。

But the measurement of nuclear data of the long-lived nuclides has not yet started in our country.

我们经过努力，克服了上述困难，测量了~(126)Sn热中子反应截面，填补了数据的空白。

The sn a ck b a r on the corner is very busy a nd you often h a ve to st a nd in line for a quarter of a n hour to buy some lunch.

拐角那家快餐店生意很红火，你常常不得不排上一刻钟队才能买到午饭。

The content of soluble sugar in leaves and roots of four wheat varieties (two resistant SK 4 and SN 7859 and two susceptible 81 5 and 8201 69) with different resistance to wheat spindle streak mosaic virus were compared in conditions of inoculation or not.

比较了4个对小麦梭条斑花叶病毒具不同抗性的小麦品种，在接种与不接种处理条件下，叶片和根系中可溶性糖含量。

On the base of the research to Geostatistics and the theory of Variation and the geologic character of X ore body in Gejiu tin deposit, we did the simulation and structure analysis of Variation to tin in the ore body ,and explained in geology.

在阐述了地质统计学原理和变异函数理论研究的基础上，根据个旧锡矿X号矿体的地质特征，对该矿体Sn品位进行了变异函数的模拟和结构分析，并在此基础上进行了地质解释。

Results showes that the suitable quantity tin can not appeared crystal boundary, and RE phase segregation reduced the tendency of intergranuiar corrosion, current efficiency of anode increased recessive quantity tin appearat crystal boundary with Sn phase, and can not improve the performance of aluminum anode. aluminum alloy, saciiiicial anode, electrochemistry performance, microstructure, tin

本文分析锡含量不同的铝基牺牲阳极的金相结构和电化学性能，阐述合金元素锡对晶粒尺寸、第二相数量、主要第二相组成、电化学性能的影响及铝阳极组织与性能的关系，以及电流效率损失的原因。1实验1.1铝合金熔炼 1号、2号和3号铝合金分别为m一5Zn一0.05In—lMg一0.3RE、舢一5Zn—O.05In一0.1sn一1Mg一0.3RE和m一5Z

Methods 22 parients(35 ears)had been tested in three noises, including white noise,speech noiseand babble noise.BN was recorded when 8～12 persons were talking at same time.The monosyllabic phonetic balance word list was made by Shen Ye in 1983 and every list includs twenty-five words,Meantime ,the effect to speech discrimination score curve was tested in different signal to noise ratio.

目的 为了观察传导性聋患者在噪声竞争下言语清晰度曲线及不同噪声对清晰度曲线的不同影响；方法测试22名(35耳)传导性聋患者三种不同噪声竞争下测得的言语识别率结果，这三种噪声为①白噪声(white noise，WN)，②言语噪声(speech noise，SN)，③多人谈话声(babble noise，BN)，即由8～12人同时讲话录制而成，其频谱与言语长时平均频谱接近。

They are not large in scale but have a marked controlling effect on the formation of hydrocarbon accumulations.

摘 要：近SN向构造在中国中西部各盆地都有发现，其规模不大，但对油气成藏却具有显著的控制作用。

Objective To find new methods to detect Sn in unplastized polyvinyl chloride pipes for drinking water sup2ply.

摘 要：目的建立测定硬聚氯乙烯饮水管材和管件中痕量锡的新方法。

Based on the Miedema model and Tanaka equation, a new method for calculating the parameters in the molecular interaction volume model has been developed to predict the activity coefficient s of multicomponent liquid alloys, in which not experimental data but only some physical properties of elements are required.

基于Miedema模型和Tanaka关系，提出了计算分子相互作用体积模型参数的新方法。该方法仅需知道元素的某些物理性质而无须熔体的实验数据，简化了计算多元合金熔体活度系数的步骤。分别计算了Ti-6Al-4V和Ti-5Al-2.5Sn在不同温度下组元活度系数的变化，计算了多种铜基合金以及Zn-Sn-Pb-Cd-Bi合金的活度或活度系数与组元配比的关系；并与Wilson模型进行了比较，计算值与实验值较好吻合

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。