cartridge stem（阀芯杆）是什么意思？音标发音+图解场景

阀芯杆 /ˈkɑːtɹɪdʒ ˈstɛm/ n

English: cartridge stem · 阀芯杆

释义：Unit activated by the handle that drives the rotating movement of the cartridge.

这个词出现在以下图解场景（1）