There are two requirements, first mastering the swing, and second being able to lock out and hold a kettlebell overhead, as in the get-up.
有两点需求，首先要掌握壶铃摆，第二是要能做到在壶铃向上运动时将其锁定至过顶位置。
2
The paper analyzes the reasons of vapor lock of light oil swing arm for rall tanker from oil property, oil temperature, technological flows and the wall temperature of swing arm.
从油品性质、油品温度、工艺流程和鹤管壁温等因素，剖析了铁路油罐车轻油鹤管发生气阻的原因。
3
They are redesigning the seal form of the bearing seat of granulation wheel and adding swing water ring out of the bearing seat, then lock question of the granulation wheel was solved;