The widerangestrain gauge with large electric resistance should be used to improve the test accuracy, because of the large strain in CFT model and the unfavorable influence of environment noise.
钢管混凝土柱模型试件的应变量级很大，环境噪声影响较大，可采用大阻值和大量程应变片提高应变准确度。
2
A digitally precisely controlled motor can vary test frequency and strain over a widerange.
高精度数控马达在大范围内改变侧试频率和应变。
3
The strain has the characteristics of wide nutrition requirement range, easy culture and short culture time.