【机】 壳形铣刀, 筒形端铣刀

conch shell

conch, shell

Organic Fluorescent Core-shell Nanoparticle

shell-and-tube heat exchanger

snail shell

Ginseng, Aconite, Dragon Bone, and Oyster Shell Decoction

freshwater mussel shell

Bupleurum, Arnebia/Lithospermum*&, and Oyster Shell Decoction