weak variation meaning in Chinese

弱变分
弱变化

The main works are listed as follows : ( 1 ) based on the excitation of bi - directional current pulse technique , a new measuring circuit for weak variation of resistance was proposed for electrical resistance tomography . traditional ac current source is n ' t adopted as the exciting source . through fast bi - directional current switching , the polarization effects are eliminated
该电路主要优点如下：该电路没有采用传统的交流电流激励法作为系统的设计原理，而是通过快速的正负极性电流切换来削弱直流电流激励时激励电极的极化效应，使通过直流法来测量气液两相流的电阻微弱变化成为可能。
According to the resources lately reported , six antigenic epitopes of the f protein were located at the three - dimensional structure of the protein . the amino acids responsible for the epitopes of the strains in the study were compared and the result revealed that all these amino acid sites were highly conserved . the weak variations were found only among four strains not related to different genotypes
根据最新资料报道的f蛋白三维结构的抗原表位的定位结果，分析和比较了22个毒株在这些表位中关键aa位点的变异情况后发现，在维持f蛋白空间结构中起重要作用的3个抗原位点一一第72位、 161位和343位aa位点上，所有毒株高度一致，未产生任何变异。