They wrote : " Many of the biomechanical changes we found when step rate increased are similar to those observed when running barefoot or with minimalist footwear. " 他们写道:“当脚步频率提高至与赤脚跑或穿最少脚上用品跑的步频相同时,我们发现许多生物力学改变。”
Hydraulic Step Rate(SR) Study & Development and Control Software Design of Steel Pipe's Measuring and Marking System 钢管检测与标识系统中液压步进梁的研究与开发及控制软件的设计
Owing to start-up and dwell continually under high speed working condition, the inertial force is the main load that leads to the chain vibration and affects the position accuracy and step rate. 由于链在高速工况下处于频繁的启动和停歇状态,惯性力是其主要的工作负荷,进而引发链节的振动,影响链系统的定位精度和步进速率。
These three kinds of techniques of well testing, step rate test and injection test at pre-fracturing are conducted to acquire formation parameters and applied in one CBM well successfully. 将地层测试、升排量注入与压降测试、注入与压降测试三种测试工艺在煤层气井压裂前实施,以获取地层参数,并将这三种方法在同一口煤层气井上成功进行了应用。
The cross-section is subjected to eccentric axial compressive load : the relative location of load application point never changes on each step rate; 截面承受偏心压缩荷载,各种步速下偏心荷载的作用点的相对位置保持不变;