POS的中文意思、音标与词形变化

[计] 销售点, 位置, 正, 主操作系统

n a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor n a noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army n a European river; flows into the Adriatic Sea n an independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States