Its iron ball consists of iron shell, drug-charging hole, drug-permeating pores and Chinese prepared medicine.

其铁球又是由铁壳、装药孔、渗药孔、中成药组成。

youdao

Its iron ball consists of iron shell, drug-charging hole, drug-permeating pores and Chinese prepared medicine.

其铁球又是由铁壳、装药孔、渗药孔、中成药组成。

youdao