...内标准品加入溶液的体积应愈少愈好3 内标准品之添加浓度,应产生足够讯号强度,以提供良好之讯噪比( good signal to noise ratio)八三一、镍的浓度 300g/l 铁的浓度20-50ppmm 想用ICP测试其中的铁含量.如果不稀释,镍的浓度太高,火焰太大,对ICP 不好.
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Sampling resistance is both the signal to noise ratio to be good and avoiding to produce the oversized survey signal.
选择采样电阻，既要信噪比好，又要避免产生过大的测量信号。
The storage system has many advantages as follows: real-time processing, good imaging quality, high signal to noise ratio, and it can be used repeatedly.
实验表明存储系统具有实时处理，成像质量好，信噪比高和能反复使用等优点。
The results of field test showed that adopting cascade geophone pattern can be results of good continuation of phase, enhanced amplitude and high signal-to-noise ratio on the records.
实际野外试验结果表明，采用串联检波器串的方式所得记录的相位连续性好、振幅增强，信噪比较高。
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