impurity concentration

In order to improve the transfer efficiency, CCD shift register is designed with buried channel CCD. Reducing the impurity concentration in the buried channel is found to be an effective method of improving the transfer efficiency at the liquid nitrogen operating temperature ( 77K).

为了提高转移效率，CCD移位寄存器采用埋沟CCD，并且发现，降低埋沟中的杂质浓度是提高器件在77K液氮工作温度下的转移效率的一种有效方法。

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It is also shown that to measure impurity concentration and/ or the distribution of impurity concentration is a better way for checking the diffused layer quality.

而测量杂质浓度或杂质浓度分布，将是检查扩散层质量的较好方法。

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However, the ultimate tensile strength and yield strength are enhanced with reducing impurity concentration, while the strain hardening shows an inverse variation tendency.

然而随着杂质含量的降低，抗拉强度与屈服强度均得到了提高，并且加工硬化能力有所下降。

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SCB chips by the doped process with oxygen-free silicon diffusion may keep resistance stable and consistent, and impurity concentration gradient helps to decreasing the ignition energy of SCB igniting device.

采用无氧的多晶硅扩散掺杂工艺制作SCB芯片能保持电阻稳定一致，能满足阻值要求，而且这种扩散工艺导致芯片杂质浓度的梯度正好有利于SCB点火装置发火能的降低。

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Pocket Measuring Instrument of SO_2 KJ-1 Automatic measuring instrument for acidity and impurity concentration in electrolytic solution of dry cell

KJ&1电液酸度及杂质浓度自动检测仪

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