海灘救生員(=coastal guard),重心(=center of gravity),總司令(=commanding general),[醫]心(動)電圖描記器
CG的用法和樣例:
例句
This paperdiscussed the effects of change of body CG and steadiness to soccertechniqu. 本文著重從理論上探討人體重心與穩度關係變化對足球技術的影響。
Lightweight titanium facesaves weight to reposition CG low and deep for higher launches and longer ball flight. 輕量化鈦桿面減輕了重量,使重心變的更深更低,提供更高的擊球角度與更長的飛行距離。