桦木 Birch ; birch

桦木科 [植] Betulaceae ; Bemlaceae ; birch family ; Betulexpertae

桦木属 [植] Betula ; birch ; BetulaLinn ; berk

欧洲桦木 European birch ; European beech

桦木门 Birch door ; board-room and conference table

皱纹桦木板 curly birch

桦木酸 [林] betulinic acid ; BETA

桦木船上的月光 nMoonlight on the birch boat

桦木醇 [有化] betulin ; betulinol ; trochol

黄桦木 Yellow Birch