Multiaxial fatigue tests were conducted on 45 steel specimens at room temperature. Thin-walled tubularspecimens were subjected to combined tension and torsion loading in low cycle strain control.
通过多轴疲劳试验，研究了在多轴加载条件下45钢的循环特性变化规律。
2
Both annelids possess a closed circulatory system with tubular hearts and a dorsal and ventral blood vessel. In both specimens, pin the following.
二种环节动物皆具有闭锁循环系，包括管状的心脏及背血管，腹血管。用大头针标示二标本的下列构造：。
3
This paper reports the experimental research of 10 specimens of short steel tubular columns filled with high-strength concrete, which have different confinement index.