isometrics
n. 静力锻炼法,肌力均衡体操
Isometrics or isometric exercises are exercises in which you make your muscles work against each other or against something else, for example by pressing your hands together.
1. muscle-building exercises (or a system of muscle-building exercises) involving muscular contractions against resistance without movement (the muscles contracts but the length of the muscle does not change)
Expertise in making checking approving piping drawings like isometrics layouts support drawings etc.
具有制作审查和批准管道制图的专业知识如等距图规划图和附图等.