- 更多网络例句与硅元素相关的网络例句 [注:此内容来源于网络,仅供参考]
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Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.
通过一系列普通电火花加工与混粉电火花加工的对比实验,运用工艺实验和理论分析相结合的方法,重点做了以下工作:(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因,并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理;(2)以混合硅粉的电火花加工为例,实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律,并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据;(3)在实际加工中,由于粉末的加入使放电间隙变大,这使得混粉电火花加工的尺寸精度难以控制,本文利用三元线性回归的方法,在实验数据的基础上,建立了两种电火花加工过切量的计算公式;(4)将正交试验法应用于混粉电火花加工实验研究,并通过对实验指标极差的直观分析,得出各电参数对加工指标影响的敏感程度。
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Scientists and science-fiction writers have long speculated about what a silicon-based life-form would look like.
科学家和科普作品的作家曾经思索过这样一个问题,一个由硅元素组成的生命体形态究竟会是怎么样的。
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It was Shockley who brought the silicon to Silicon Valley.
将硅元素带进硅谷的就是萧克利。
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Cacoxenite, beryllonite, viseite, beraunite, alluaudite, rhabdophane and apatite are non-silicon channel structural minerals.
黄磷铁矿、磷钠铍石、磷方沸石、簇磷铁矿、磷锰钠石、水磷铈石和磷灰石是非硅元素的孔道结构矿物。
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EDXA analysis showed that: there was little silicon, only 0.1%, and dispersively distributed in the cell wall of wood.
EDXA分析表明:未处理材硅元素很少,只有0.10%,呈星散状分布于细胞壁中。
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The rabbits were sacreficed in groups 20, 40, 60, 90, 120, or 180 days after operation, and the silicon and aluminium contents in iliac bone and gluteus medius muscle on both sides were determined by inductively coupled plasma atomic emission spectrometry.
本实验在家兔骼骨处植入氧化铝材料后,分别观察骼骨和臀中肌内的铝、硅元素变化及其释放情况,报道如下。
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The study results have indicated that the alloy layer thickness decreases with increase of Si addition, increases linearly with rise of bath temperature and varies parabolically with length of dip time.
结果表明:在实验研究范围内,随硅元素含量的增加,合金层厚度降低;随浸镀温度的升高,合金层厚度呈直线增加;随浸镀时间的延长,合金层厚度呈抛物线规律变化。
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A brief introduction about spiro compounds including Si elements is also reviewed.
对含有硅元素的螺环化合物发光材料进行了简单介绍。
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Iron-base fluxed alloy is produced by adding suitable amount of boron and silicon into iron-carbon alloy, which is usually used on the wearable and weak-acid-medium proofing accessories under 500℃. Although the performance of iron-base fluxed alloy can not match with that of the nickel or cobalt alloy, it has wide source materials and low prices, which is the great advantage for application.
铁基自熔性合金是铁——碳合金中加入一定量的硼、硅元素制成的,通常应用在常温——500℃以下耐磨损、耐弱酸腐蚀介质的机械零部件上,仅管铁基自熔性合金,综合性能不如镍、钴基合金,然而原料来源广泛,价格便宜,这是其得以普及应用的较大优势。
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The effect of silicon and copper on SDAS was confirmed by the experimental results, by casting the cylinder heads of different aluminum alloys.
结果证实了合金中的硅元素和铜元素减小树枝晶尺寸的作用。
- 更多网络解释与硅元素相关的网络解释 [注:此内容来源于网络,仅供参考]
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alloy steel:合金钢
2) 合金钢(alloy steel)常用合金元素有硅锰镍铬铜钒钛、稀土元素等. 普通低合金结构钢,渗碳钢,调质钢,弹簧钢,滚动轴承钢3) 铸铁(cast iron)含碳量大于2.11%的铁碳合金,力学性能比钢差,不能锻造. 但具有优良的铸造性、减震性、...
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carbon steel:碳素钢
这...碳素钢(carbon steel) 碳含量为002%~135%,并有硅、锰、硫、磷及其他残余元素的铁碳合金,简称碳钢. 碳钢中硅和锰是在炼钢时作为脱氧剂而加入的,硫和磷是由炉料带入并在炼钢时未能除尽而成为有害杂质.
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electronegative:电负性
,铯(Cs+)离子束溅射用于提高电负性(electronegative)材料(如磷P、砷As、锑Sb和气体元素)的离子产率. 通过选择正确的一次离子束和优化仪器条件,SIMS能够提供低于ppm到ppt水平的极好的探测极限. 下表给出了SIMS所选元素在硅的体相模式(Bulk)下的探测极限.
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Extrinsic semiconductor:外质半导体
而掺杂过的半导体则称为外质半导体(extrinsic semiconductor). 以一个硅的本质半导体来说明掺杂的影响. 硅有四个价电子,常用于硅的掺杂物有三价与五价的元素. 当只有三个价电子的三价元素如硼(boron)掺杂至硅半导体中时,硼扮演的即是受体的角色,
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potash:草碱
由于这种金属是从钾草碱(potash)中制得的,所以将它定名为Potassium (中译名为钾). 后来他又用电解的方法制得了金属钠、镁、钙、锶、钡和非金属元素硼和硅,成为化学史上发现新元素最多的人. 戴维在电解石灰和重土(BaO)时遭到了多次失败,
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silicone resin:硅树脂
有机硅是含有硅元素的众多高分子化合物的总称,一般是指以硅氧烷为主链的聚有机硅氧烷,包括硅油(silicone fluids)、硅橡胶(silicone rubber)、硅树脂(silicone resin)、硅烷偶联剂(silanecoupling agents)四大门类.
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.se:硒
半金属料 一般指硅(Si) 硒(Se) 碲(Te) 砷(As) 硼(B)等,此类金属的物理性能介于金 属与非金属之间,如砷是非金属,但能传热导电. 稀有金属 通常是指那些在自然界中含量少,分布稀散或难从原料中提取的金属.如钨 钛等 黑色金属锰(Mn) 铁(Fe) 铁元素大约占地壳之元素总量的 5.5%,
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Te:碲
半金属料 一般指硅(Si) 硒(Se) 碲(Te) 砷(As) 硼(B)等,此类金属的物理性能介于金 属与非金属之间,如砷是非金属,但能传热导电. 稀有金属 通常是指那些在自然界中含量少,分布稀散或难从原料中提取的金属.如钨 钛等 黑色金属锰(Mn) 铁(Fe) 铁元素大约占地壳之元素总量的 5.5%,
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wollastonite:硅灰石
样品制备好后,采用扫描电子微镜观察细胞形态,选定区域,采用X射线能谱仪检测细胞中钠、镁、钙等元素的百分含量,以钠长石(Albite)、氧化镁(MgO)及硅灰石(Wollastonite)作为标准品,所有经过分析的元素均经过归一化处理.
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Acronychia pedunculata:山油柑
采用SEM-EDXA法对山油柑(Acronychia pedunculata)木材轴向分布、径向分布中硅石的分布、形态、纳米结构以及硅元素含量进行了分析.结果表明:(1)山油柑木材中硅石主要分布在木射线细胞、导管细胞以及轴向薄壁细胞,