connecting hole meaning in English

连接孔

Loading grads is another non - structure coefficient influencing loading characteristics except loading frequency . the low grads characteristics are analyzed deeply by simulation , and found that applying structure invariance principle with acceleration compensation can reduce loading grads effectively . the dissertation also simulates and compares the systems with connect hole of different size , and founds that the size of connect hole has an optimized value
加载梯度是除了加载频率之外另一个影响加载性能的非结构上的参数,论文作了大量的仿真分析来研究小梯度加载特性,得出了具有加速度补偿的结构不变性原理可以有效的降低小加载梯度时的多余力矩的影响;通过对具有不同的总压力流量系数的系统的仿真比较,得出了连通孔的大小在不同工况下存在一个最优的值,其开度需要合理的选择。