Yabla video uses of 微量元素

这种 zhèzhǒng
功能 gōngnéng
茶叶 cháyè
zhōng
suǒ
hán
de
微量元素 wēiliàngyuánsù
有关 yǒuguān
This kind of function is related to the trace element fluoride contained in tea leaves.