词汇	jet packs
释义	jet packs 🌏喷气背囊；个人飞行器；喷射背包
随便看	direct materials consumed direct materials cost direct materials cost method direct materials cost percentage direct materials price variance direct materials purchase price variance direct materials purchases budget direct materials supplies direct material supply direct materials usage variance direct materials variance direct materials yield variance direct material usage variance direct matrix direct meaning direct mean torque direct measurement direct-measurement direct measurement method direct measurement of efficiency direct measurement of oxygen direct measurement of temperature direct measurement parameter direct measurement result direct measurement scale