The above results showed that the spectrum of resistance was relatively stable and had a practical value to production and breeding.

以上结果说明抗谱测定是相对稳定的，对生产与育种有实用价值。

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It results in a higher efficacy against a broader spectrum of pathogens and is known to prevent micro-organisms from developing resistance to the antibiotic substance.

从而针对更广谱的病原体产生更强疗效，而且，也能防止微生物产生对抗生素的耐药性。

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Detection of tumor blood flow within the spectrum, recorded peak systolic velocity (PSV) and resistance index (RI).

检测肿瘤内部的血流频谱，记录收缩期峰值流速(PSV)和阻力指数(RI)。

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