What does 装卸 (zhuāngxiè) mean in English?

Card 3495HSK Level 43495/3571
CARD3495
PROGRESS98%
装卸
裝卸
zhuāngxiè
load and unload(Verb)

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d