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1)  preferentially erosion
选择性侵蚀
2)  selected erosion
选择侵蚀
3)  particle selectivity during erosion
侵蚀分选性
4)  selective corrosion
选择性腐蚀
1.
The Si-TaSi2 field emitter arrays were fabricated according to the selective corrosion theory.
依据选择性腐蚀的原理,把电子束区熔技术制备的Si-TaSi2共晶自生复合材料制作为Si-TaSi2场发射阴极阵列。
2.
The cleaning was satisfactory and no selective corrosion and pit corrosion occurred to aluminum brass.
清洗效果理想,没有发生铝黄铜选择性腐蚀及点蚀,除垢率达到98%以上,达到了预期的目的。
5)  selective etch
选择性刻蚀
1.
Because of its strong selective etching ability, oxygen ions directly decomposed from CH 3OH plays an important role in the sy.
经分析认为,等离子体中因甲醇裂解产生的氧离子及含氧基团对无定形碳具有很强的选择性刻蚀能力,为低温合成纳米碳管时提高其纯度创造了条件。
6)  selective etching
选择性腐蚀
1.
The selective etching of GaAs/Al XGa 1-x As(x=0 8~0 9)heterostructure,of which the GaAs solar cell of conventional structure is made,is a key process in the fabrication of solar cell removing the GaAs cap layer everywhere except under the grid lines and exposing the AlGaAs window layer.
对该异质结构的只腐蚀GaAs而不腐蚀AlGaAs的选择性腐蚀工艺是GaAs太阳电池制备过程中的一道关键工序。
2.
In order to solve the problem of selective etching of the sacrificial layer in the MEMS fabrication technique,a new way to judge whether the sacrificial layer is etched completely was pointed out.
针对MEMS(micro-electro-mechanical system)工艺中牺牲层的选择性腐蚀问题,提出了一种判断牺牲层是否完全腐蚀的新方法,解决了这一工艺难点。
3.
A optimized process consisting of two-step selective etching is proposed to solve the problem that the selectivity between TiN/Ti and TiSi_2 is poor with the conventional RCA1(NH_4OH:H_2O_2:H_2O) solution and results in a loss of a substantial part of the formed silicide thickness and hence in an increase of the contact resistance.
针对传统TiSi_2工艺中RCA1(NH_4OH:H_2O_2:H_2O)溶液对于TiN/Ti与TiSi_2的选择性不好会造成硅化物的损失、提高接触电阻的问题,提出一种采用2次选择性腐蚀的工艺方法进行改善。
补充资料:放射性分选
分子式:
CAS号:

性质:是按铀矿石不同的放射性射线强度,以机械方式将品位不同的铀矿石分组为精矿与尾矿的选矿方法。当矿石中的铀与其衰变子体镭与氡呈放射性平衡时,可用衰变子体的γ放射线强度来表征矿石中的铀含量,它们之间通常呈正比关系。放射性分选对铀矿石是一种简单经济的特征选矿方法,可在专门的放射性分选机中进行。K-H分选机是一种常用的放射性分选机,它由矿块输送(如皮带输送)、γ放射性及矿块面积测量仪器、信息处理装置和高压空气喷嘴等部分组成。

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