指父子两代。南朝 梁 庾肩吾 《书品》：“一字不遗两叶之妙。”《旧唐书·经籍志上》：“昔 马谈 作《史记》， 班彪 作《汉书》，皆两叶而仅成。”
二叶亭四迷 Futabatei Shimei ; Shimei Futabatei
二叶舌唇兰 Platanthera chlorantha ; P. chlorantha Cust. ex Rchb ; Lesser Butterfly Orchid
二叶石豆兰 Bulbophyllum shanicum
有二叶的 diphyllous
二叶目 DIPHYLLIDEA
二叶红门兰 Orchis diantha ; Orchis diantha Schltr
肺动脉瓣二叶瓣 bicuspid pulmonary valve
二叶主动脉瓣 bicuspid aortic valve
二叶藤属 Arrabidaea
对二叶式主动脉瓣疾病的患者通常应该进行升主动脉置换吗？
Should the ascending aorta be replaced more frequently in patients with bicuspid aortic valve disease?
粘度增大，单位体积功增大时泛能式桨微观混合效果优于二叶平桨。
In higher viscosity and higher power dissipation rate per unit mass, micromixing ability of full-zone is better than paddle impeller.
在正常制程、春茶、一芽一叶与一芽二叶的状况下，所评鉴出的茶质特色。
The evaluation of the characteristics of the tea is rated in the condition of the normal production process, spring tea, a bud with a leaf and a bud with two leaves.
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